Stacker LockerOpening soon

A collector platform from 320 Coins

Your collection.
Locked in.

Identify a coin in seconds, catalog it with real evidence, and see what it's worth without a false-precise number. One place to hold everything you collect — built like a vault, not a spreadsheet.

No spam. One note when the door opens.

Au
$4,261.24
Gold / troy oz
Ag
$63.54
Silver / troy oz
Pt
$1,733.49
Platinum / troy oz
Pd
$1,246.74
Palladium / troy oz

The combination

Six numbers, one system

01

Identify

Point your camera at a slab or a raw coin. Certified holders resolve by barcode or cert number; raw coins get a candidate match with a confidence score, never a false certainty.

02

Catalog

One record per specimen, with the evidence behind it: acquisition lot, grader, certification number, images, and every value estimate with its source and as-of date.

03

Value

Estimates show a range and a confidence label, not a single false-precise number. Melt, market, and replacement value stay separated so you know what you are looking at.

04

Complete

Sets and goals track what is missing and what it would cost to finish. Progress is truthful — real completion mechanics, never a manufactured streak.

05

Provenance

Signed private-mint manifests bind a serial to a signature you can verify. Your acquisition history and storage notes stay private by default, always exportable.

06

Pass On

Legacy Access releases inventory and plain-language guidance to a named contact only after verified waiting periods and evidence — never on inactivity alone.

Pick a box

One paid decision

Free proves the system with a real mini-collection. Pro removes the limit. There is no upsell ladder in between.

Locker

Free

$0

Up to 20 tracked items

  • Public catalog & research
  • Melt value & value ranges
  • Basic collection tracking
  • CSV / JSON export
Vault
Best value

Pro

$7.95/mo

or $59.95/yr — unlimited tracked items

  • Unlimited tracking, full history
  • Evidence-backed valuation & comps
  • Sets, goals & Show Mode
  • Insurance & estate reports
  • Legacy Access, multiple vaults

International from day one

One canonical catalog, five launch locales. A collector in Madrid, Berlin, Paris, or Shanghai gets the same private vault as a collector in the U.S.