Backstamp: Hallmark Identifier
Silver, Gold & Pottery Worth
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Before you put it back on the shelf: photograph the mark. Solid or plated? Real or repro? What does it sell for? Backstamp answers in seconds. Free, no account needed.
Photograph the mark on the bottom. Backstamp reads what that mark means: solid or plated, genuine standard or reproduction, 1890s or 1970s — and the typical sold range for pieces carrying it.
It isn't a list you search. Backstamp reads the mark you're holding, then shows you the exact characters it matched on — so you can check its work.
THE TRAPS IT CATCHES
Most people misread the same marks:
• "1847 Rogers Bros" — a founding year, not a date, and the piece is silverplate
• EPNS, Alpaca, nickel silver — no solid silver in any of them
• "22 KT GOLD" on china — that's paint, not bullion
• "WedgEwood" with an extra E — not the real firm
WHAT'S FREE
Everything: three decodes a day, with no account — plus the full marks library, the field guide and the British date-letter tool, permanently unlocked.
WHAT YOU GET
• A verdict in seconds, with the characters it matched on
• Purity standards, assay symbols, self-dating country marks, and the makers that matter
• A date-letter tool that turns one British hallmark letter into its candidate years
• A ledger of every find, with what you paid beside what the mark suggests
• Typing a mark works offline — library, guide and decoder live on your phone. Photo scanning needs a connection.
Backstamp is a research aid, not an appraisal. Estimates reflect typical sold prices for pieces in good condition — condition, pattern and size move them. Backstamp shows you the range and the evidence behind it, in seconds, on the mark in your hand.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Andris Zimelis, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Andris Zimelis
- Size
- 8.1 MB
- Category
- Reference
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Andris Zimelis