The bow-fronted shop window of Drew’s Antiques & Precious Metals on Harrowby High Street was flanked by two fluted cast-iron drainpipes that Ada had re-seated with lead oakum seven years ago.
Behind the leaded glass panes, the display was a careful balance between country gentility and hard field skill. Georgian silver sugar tongs, Victorian carriage clocks with brass pendulums, and a velvet-lined case containing antique jeweler’s hand tools. Outside on the stone floor, the morning rain had washed the grit into the gutters. The heavy diesel lorries heading for the canal bypass shook the glass every ninety seconds with a deep, shuddering rattle that set the pendulums swaying.
Ada pushed the heavy oak door open. The shop bell gave a short, brass chime that died away into the dry smell of beeswax, metal polish, and old dark wood.
Behind the counter, a velvet curtain parted. Tamsin Drew stepped into the shop, wiping her thumbs on a stiff indigo leather apron. At fifty-two, Tamsin had the broad, muscular shoulders of an artisan who had spent three decades hammering silver plate, and short, brush-cut iron-gray hair that showed no patience for hairpins. A jeweler’s magnifying glass was mounted on a blackened steel headband tilted back on her forehead. Her cuffs were rolled to the elbows, revealing forearms spotted with the tiny pale scars of acid splatters.
“Ada,” Tamsin said, her voice a deep, gravelly alto. “If you’re here about the waste trap in the back polishing shop, it’s stopped dripping. I tightened the squeezing nut myself with a pair of pump pliers.”
“I told you not to touch that brass nut without a rag over the jaws, Tamsin,” Ada said, unzipping her high-vis jacket. “You’ll chew the chrome to ribbons.”
“The chrome was chewed in nineteen eighty-four,” Tamsin said, resting her knuckles on the polished dark wood counter. “What’s in the canvas bag? You don’t come up the High Street at nine in the morning unless someone’s lead valley has collapsed or you’ve got scrap to weigh.”
Ada set a small, heavy green canvas pouch onto the baize mat between them.
Inside was the loose coil of silver wire that Pella had passed through the arch during yesterday’s brief opening, alongside the river silver coin. It was roughly twenty feet of wire, about three-sixteenths of an inch thick—the gauge of heavy fencing wire—wound into an irregular loop the size of a tea saucer. The metal was dull gray, unpolished, and slightly greasy to the touch. He carried the faint, cold scent of river mud, pipe lime, and copper green rust.
Tamsin didn’t pick it up right away. She stood looking at it for four seconds, her head tilted. Her trained eye took in the uneven thickness of the strand.
“Where did this come from?” she asked.
“Salvage from an old town waterworks,” Ada said evenly. “Demolition of some pre-war intake galleries.”
“Pre-which war?” Tamsin reached out, her fingers closing around the coil. She lifted it, testing the mass in her hand with the gut muscle-memory of a licensed appraiser. “This isn’t heavy-duty drawn wire, Ada. Look at the outer edge.”
She pulled the magnifying glass down over her right eye. Then she stepped under the adjustable halogen bench lamp.
“No die lines,” Tamsin murmured, turning the wire under the bright white beam. “Modern extrusion leaves tiny parallel striations along the length from the heavy dark metal-hardened carbon-iron draw plates. This was pulled by hand through an unhardened iron plate, probably swaged with animal fat. The cross-section is slightly elliptical. And look at the crystal-clear structure at the cut ends.”
“What about the purity?” Ada asked.
Tamsin glanced up over the rim of the magnifying glass. “Come into the back. You don’t test un-hallmarked bullion on a retail counter. The police liaison officer walks past at nine-thirty. I don’t need him asking why the town’s main heating builder is bringing in raw wire by the pound.”
Ada followed her through the velvet curtain into the workshop.
The back room smelled entirely of industry: strong etching acid vapors from the fume hood, rotten-stone polishing paste, and the dry, stone heat of an electric muffle fire idling on low current. On the corner of the workbench sat a clay pot mug of boiled tea beside a half-eaten sourdough crust, cold and dusted with caraway seeds from the deli across the road.
Tamsin laid the coil on a flat wooden bench. From a drawer beneath the fume hood, she drew out a box-shaped slab of black Arkansas touchstone. A dense, fine-grained siliceous stone whose surface was matt and fully smooth. Beside it she arranged three glass dropper bottles with acid-resistant Teflon stoppers, their labels marked with black grease pencil: 14K, 18K, SILVER.
She picked up the end of the wire. Then she drew the snapped face firmly across the surface of the touchstone three times.
The metal left a thick, lustrous, silvery-white streak across the dark stone, solid and heavy as fresh lead pencil lead.
“Good thickness,” Tamsin remarked. “Soft. No drag from iron or too much copper hardening.”
She uncapped the third dropper bottle, drew up half an inch of clear liquid—a standardized solution of strong etching acid mixed with potassium dichromate—and allowed a single ruby-red droplet to fall directly across the center of the silver streak on the stone.
Ada leaned over the bench, her hands tucked into the pockets of her fleece. In plumbing, acid testing was used to check for dezincification in brass valves. She knew the violent, bubbling green froth that accompanied high base-metal content.
There was no froth.
The streak didn’t dissolve into a dirty brown wash. The chemical reaction took hold. Then, the see-through droplet turned a deep, intense, blood-red color, the precipitate forming cleanly across the metal mark without a single bubble of gas.
“Look at that,” Tamsin whispered. Her magnifying glass was two inches from the stone. “Pure silver chromate. Blood red. No green tint from copper, no milky haze from tin or zinc.”
She rinsed the stone with a squeeze of distilled water from a plastic wash bottle, blotted it with a clean square of ashless filter paper. Then she walked over to her care analytical balance.
She tuned the digital display with a brass tare weight. She set a glass beaker of distilled water on the platform. Then she suspended the coil of wire beneath the surface from a hair-thin monofilament line to measure its volume shifted weight. The numbers on the red LED readout flickered, steadied, and held.
Tamsin picked up a ballpoint pen and scribbled three counts on the corner of a brown paper blotter. Mass divided by shifted weight volume.
“Ten point four nine,” she said, looking at Ada with open shock. “Pure elemental silver has a specific gravity of ten point four nine at twenty degrees. This is running ten point four six.”
“What does that mean in percentages?”
“Ninety-nine percent,” Tamsin said. She took off her magnifying glass and tossed it onto the bench. “It isn’t sterling, Ada. Sterling is ninety-two point five percent silver and seven point five percent copper to give it load-bearing stiffness for forks and tankards. This is native silver, cupelled with charcoal and bone ash to strip the lead out of the galena ore. It’s softer than butter. If you tried to make a teaspoon out of this, it would bend in your tea.”
She reached out and tapped the heavy coil with her fingernail. The metal gave off a dull, leaden clink, fully lacking the high, bright ring of alloyed currency.
“It’s beautiful metal,” Tamsin added, her skilled skepticism yielding to craftsman’s admiration. “Whoever smelted this didn’t use an electric power-coil fire. There are traces of dissolved sulfur in the grain boundaries that only come from oak charcoal smelting. But they knew their business. They cooked this in a cupel until every trace of bismuth and antimony was blown off in the melted rock waste.”
“Can you buy it?” Ada asked directly. “Legally?”
Tamsin walked over to a high oak desk beneath the window, pulled down a heavy, blue cloth ledger stamped SCRAP METAL DEALERS REGISTER. 2013 ACT, and dipped a steel nib into a fresh bottle of dark oak-ink.
“I can buy anything that has a legal paper trail, Ada,” Tamsin said. She turned to a fresh folio page. “Under the 2013 Act, I can’t pay you in cash. Not a single five-pound note. Everything has to go through an accredited bank transfer or an account check, with checked customer identity and formal logging of the metal source. If Trading Standards or the police audit this book, I have to show where every troy ounce came from.”
“I have a business bank account,” Ada said. “Morland Heating & Drainage. Sole trader, registered for VAT.”
“Good,” Tamsin said, ruling a clean red line down the ledger page. “Then we treat this as a trade delivery for scrap refining. I can’t put ‘ancient foreign drainage wire’ on the docket. Or the VAT checker will have a splitting headache on my rug. We log it as raw heavy-duty silver scrap, recovered from decommissioned spark contacts or chemical processing equipment.”
She looked up at Ada, her gray eyes narrowing with sharp, friendly shrewdness.
“How much of this is there?”
“That depends,” Ada said. “There’s an ongoing remediation project down by... The river. The client doesn’t have sterling. But they have access to old stores of this wire, and they’ve got silver coins stamped at thirty-four grams apiece.”
Tamsin set her pen in the brass groove of the inkstand. She folded her hands over the open ledger.
“Ada, if this is coming out of a church crypt or a scheduled ancient monument, tell me now so I can throw you out of my shop. I’ve held a dealer’s license in this town for thirty years. I’m not losing it to the heritage police.”
“It’s not from a church,” Ada said, her voice steady as a weighted drop-line. “And it’s not from a monument. It belongs to people who live in damp cellars and haven’t had a town land-mapper look at their drains in fourteen years. They’re paying for building consultation and hardware to keep their homes from flooding. That’s the work. No theft, no desecration, no stolen plate.”
Tamsin held her gaze for ten seconds. The rain rattled against the workshop window, with the muffled rumble of a bus pulling away from the high street stop.
Then Tamsin picked up the pen again.
“All right,” she said. “Here’s how we handle it. The London Bullion Market fix this morning opened at twenty-two pounds sixty per troy ounce. Pure silver trades slightly below that for raw scrap because of the melting and melted rock waste loss. Say twenty pounds eighty an ounce.”
She weighed the coil on the platform balance. “Four hundred and ten grams. That’s thirteen point one troy ounces. Net value: two hundred and seventy-two pounds forty-eight pence.”
She wrote the figures into the ledger in clean, rounded script: Client: Morland Heating & Drainage. Commodity: Unrefined Silver Scrap (99% Purity). Weight: 13.1 oz. Locked deposit Credit: £272.48.
“I’ll charge you five percent for the assay, bookkeeping, and banking transfer fees,” Tamsin said, stamping the page with her official brass business seal. “The rest sits in a ring-fenced client locked deposit ledger under your company name. When you need cash to buy pressure valves, packing glands, or whatever else you’re hauling into those cellars, you invoice my account. I transfer the sterling into your trade account within twenty-four hours.”
“That works,” Ada said.
Tamsin tore the yellow duplicate slip from the receipt pad. Then she slid it across the desk with a firm push of her thumb.
“And Ada?”
“Aye?”
“Tell your river clients to keep their wire in dry sacks,” Tamsin said, a faint, wry glimmer in her eyes as she closed the inkpot. “That river silt is fine for proving authenticity. But it plays the devil with my balance pans. If you’re going to be their banker, make them wash their metal first.”
Ada took the receipt, folded it into her breast pocket beside her Casio calculator. Then she zipped her jacket.
“I’ll tell them,” Ada said. “We’ve got a tailor crossing over this afternoon to teach them hygiene. They’re learning.”