HumCity
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coin listing software

Coin listing software for serious numismatic resellers

Year, mint mark, denomination, and grade — read from the photo. Listings ship in seconds.

Start free — 50 listings/mo View demo
The problem

Cataloging coins for eBay is the slowest data-entry job in numismatics.

Every coin listing on eBay needs the year, mint mark, denomination, type, composition, and grade — and for collector-grade coins, the variety, die marker, and pedigree on top of that. Numismatic sellers know that getting these fields right is the difference between a $40 sale and a $400 sale, and getting them wrong is the difference between a sale and a return.

The traditional workflow is to identify each coin in hand (or in slab), open the eBay listing form, navigate dropdowns for category, type, year, mint, denomination, and grade, then write a title and find a comp. For a dealer ingesting a 500-coin estate, this is multiple days of staring at forms instead of valuing coins.

HumCity reads coin photos. Obverse, reverse, slab label — drop the images and the AI extracts year, mint mark, denomination, type, and grade. PCGS and NGC slab labels parse cleanly. The listings ship to eBay's Coins category with the right item specifics on the first try.

What you get

Capabilities built for this exact workflow.

  • Year, mint mark, and denomination from obverse and reverse photos

    HumCity reads US coin photos and extracts the year (including overdates and over-mintmarks where visible), mint mark (P, D, S, CC, O, W), and denomination. The model is trained across the full US coin run — Half Cents through Modern Gold — and handles common world coin types as well.

  • Type detection for Morgans, Peace, Walking Liberties, and more

    Type recognition (Morgan dollar, Peace dollar, Walking Liberty half, Mercury dime, Standing Liberty quarter, Saint-Gaudens, Indian Head cent, Buffalo nickel, etc.) drives both the eBay category and the search-relevant title. The model recognizes both major and minor types and applies the right item specifics schema automatically.

  • PCGS and NGC slab parsing

    Drop a photo of any PCGS or NGC slab label and HumCity extracts the grading company, numerical grade, variety designation (VAM, FS, RPM), cert number, and any pedigree markers. The cert flows into the eBay item specifics and the title, and the population data is surfaced when available.

  • Variety and VAM recognition for advanced numismatics

    For serious numismatic sellers, the variety is often the value. HumCity recognizes major Morgan VAMs, Lincoln cent doubled dies (1955, 1972, 1995), Jefferson nickel full-step designations, and common Walking Liberty FBL strikes when the variety is identifiable from the image or the slab label. Unidentifiable varieties are flagged for human review.

  • Comp pricing from eBay sold listings — by year, mint, grade

    Pricing a 1893-S Morgan in MS-63 means looking at the last 90 days of completed eBay sales for exactly that coin. HumCity narrows comps to the exact year/mint/grade and surfaces median, low, and high. The system also pulls Greysheet-style wholesale benchmarks where available so dealers can price against both retail and bid.

  • Bulk upload for estate purchases and dealer inventory

    When you buy out a 500-coin estate, Pile Mode handles the intake. Drop all the photos at once and HumCity runs identification in parallel. Duplicate detection consolidates multiple shots of the same coin (obverse + reverse + slab) into a single draft listing, so you end up with one listing per coin instead of three.

Use cases

Built for the way real resellers work.

Dealers liquidating estate purchases

When a numismatic dealer buys out an estate, cataloging is the bottleneck between purchase and revenue. HumCity ingests entire estates in Pile Mode and produces a sortable, valued catalog — you can decide which coins to list on eBay, which to sell wholesale, and which to send to grading without ever opening a spreadsheet.

Submission-tracker workflow for grading returns

Coins submitted to PCGS or NGC come back with new labels and population data. HumCity reads the new slab labels on return, ingests them as listing drafts, and prices them against the appropriate cohort. The cert number is included in the title so buyers can verify on the pop report before bidding.

Modern US Mint product flippers

Modern proof sets, silver eagles, gold buffaloes, commemoratives — Mint product has its own listing patterns and its own buyer base. HumCity recognizes modern Mint product (Burnished, Proof, Reverse Proof, Enhanced Uncirculated) and ships listings to the correct eBay Mint Product category with composition and mintage data filled in.

World and ancient coin specialists

World coin and ancient coin cataloging is harder than US — the type, ruler, mint, and denomination need to be identified from often-worn surfaces. HumCity handles common world types (Canadian, Mexican, British, German, French, Spanish), and for ancients, the system suggests an attribution and flags for expert review rather than guessing.

How it works

From inventory to live listings in three steps.

01

Photograph your coins

Obverse, reverse, or slab labels — HumCity ingests them all. Phone photos are fine; a copy stand is even better.

02

AI identifies the coin

Year, mint, denomination, type, variety, and grade extracted automatically from the image.

03

Publish to eBay

Category set to Coins & Paper Money. Item specifics, grade, and pricing prefilled. Approve and publish.

FAQ

Common questions

Does it read PCGS and NGC slabs?
Yes. HumCity reads the slab label and pulls grade, certification number, variety designation, and pedigree. PCGS and NGC slab designs are both supported, including modern Plus grades, CAC stickers, and Old Green Holders (OGH) when visible.
Can I list raw, ungraded coins?
Yes. HumCity will detect year, mint, denomination, and type, and suggest a condition band based on the visible wear. You make the final grading call before publish — the AI surfaces a suggestion rather than committing you to a grade.
How does pricing work?
We pull recent sold comps for the same year, mint, type, and grade cohort and suggest a range with the median highlighted. For coins in slabs, the comp set is narrowed to the same grading company and grade. For raw coins, comps are pulled across the suggested grade band and you see the full range.
Does HumCity handle world coins and ancients?
Common world coin types (Canadian, Mexican, British, German) are recognized natively. Ancient coins are handled with a suggest-and-flag workflow where the AI proposes an attribution and you confirm before publish. Coverage of niche world series is improving release-over-release.
Can it recognize varieties like VAMs and FS designations?
Yes for the major varieties. Morgan VAMs that are commonly identified, Lincoln cent doubled dies (1955, 1972, 1995, 2007), Jefferson Full Step designations, and Mercury Full Band designations when called out on the slab. For varieties only identifiable in hand under magnification, HumCity flags the coin for expert review.
Does it work for currency and paper money?
Paper money support (Federal Reserve Notes, Silver Certificates, National Currency, Fractional) is in active development. The Coins & Paper Money eBay category is supported today for coins; currency listings can be created manually.
Is HumCity safe for high-value coin listings?
Yes. Every field is editable inline before publish, and the AI flags low-confidence identifications for explicit review. For high-value coins, sellers commonly review the listing more carefully — but the time-saving on the data-entry portion is still substantial.
Can I integrate with PCGS CoinFacts or NGC NGC Coin Explorer?
Direct integration is on the roadmap. Today, the cert number in the listing links buyers to the appropriate pop report site so they can verify before buying.
Is there a free tier?
Yes. Every account gets 50 free listings or revisions per month with no credit card required. Most resellers can fully evaluate the AI workflow, image recognition, and bulk upload before deciding to upgrade. Paid plans start at $10/month for 500 listings and scale with volume.
Does HumCity use the official eBay API?
Yes. HumCity is an authorized eBay API partner and uses the official Trading and Inventory APIs. Every listing published from HumCity appears in eBay Seller Hub normally, counts toward your eBay reputation, and respects your existing business policies for shipping, returns, and payments.
How big can a bulk batch be?
Pile Mode™ supports up to 500 images per batch on every paid plan. Most sellers run batches of 30–100 items in a single pass — a full sourcing haul or a day's intake. The system parallelizes AI inference across the batch so a 100-item upload is typically ready for review in under two minutes.
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