Verification guides

Guide hub for photo ID, grading, and valuation decisions

Use these guides after app scan results to confirm stamp identity, review front/back evidence, and estimate realistic value ranges.

Use the app alongside these guides for faster verification:

Inverted Jenny stamp - one of the most valuable US stamps

11 min read

Stamp Value Checker Guide

Turn IDs into realistic low-mid-high price ranges using condition scoring and sold-market comparison.

ValuationConditionSales comps
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Stamp collection in album - find out how much your stamps are worth

10 min read

How Much Is My Stamp Worth?

Step-by-step guide to checking stamp values. Covers identification, condition grading, market pricing, and what to do with inherited collections.

ValuationBeginnerInherited
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British Guiana 1c Magenta 1856 - the most valuable stamp in the world

14 min read

5 Most Valuable Stamps in the World

The stories behind the world's most expensive stamps: British Guiana 1c Magenta, Inverted Jenny, Treskilling Yellow, Mauritius Post Office and Penny Black.

RarityHistoryValuation
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Penny Black - the world's first adhesive postage stamp, 1840

10 min read

How to Identify Old Stamps

A structured method to date classic issues by paper, printing, postmarks, and era-specific design cues.

HistoricalDatingAuthentication
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Japanese telegraph stamps showing different perforation measurements

10 min read

Stamp Perforation Guide

Learn how to measure perforation gauges, understand compound perfs, and identify varieties that affect value.

TechnicalPerforation
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