Methodology
Last updated October 1, 2026
Every Proofmark report follows the same documented steps. We publish them so you, your attorney or your insurer can judge exactly what a report is — and what it isn't.
From your photographs and details we identify the make, model, caliber, approximate era and notable variants, using markings, serial position, finish and features. Where identification is uncertain the report says so.
Condition is graded on the NRA standards scale (from Poor to New), using visible finish wear, metal and wood surfaces, and any evident alterations. Because grading is from photographs, it reflects only what is visible.
The report states one conclusion of value: fair market value, the price between a willing buyer and willing seller, neither under compulsion, both reasonably informed.
For reference, it also shows wholesale/liquidation, dealer trade-in, retail replacement and high retail/auction levels. Trade-in is the midpoint of wholesale and private sale; high retail/auction is retail × 1.25. These are context, not separate opinions of value.
Estimates draw on published price guides and general market knowledge. Reports cite their sources in a bibliography. We only describe live sales data when it was actually queried for that specific report; today, comparable sales are not drawn from a live database.
Reports marked as reviewed are examined by a credentialed appraiser whose credentials appear in the report. The appraiser may revise identification, grade or values; each revision is recorded in an audit trail.
When a report is published it is sealed with a SHA-256 fingerprint and locked against edits. Its verification code lets anyone confirm the copy in front of them matches our record.
These are desktop estimates without physical inspection. We do not test function or authenticate provenance, and we make no claim that a report meets USPAP, IRS, court or insurer requirements; consult your advisers about suitability.