Tang stamp
Enter the visible stamp words, dots, X marks, U.S.A. line, and lightning-S details. If part of the stamp is worn, leave uncertainty in the notes instead of forcing a single year.
Case Knife Value Checker Guide: What to Enter Before You Price It
The checker works best when identification evidence comes before the dollar range. Record the tang stamp, pattern code, condition, and packaging honestly, then use comparable sales to narrow the estimate instead of chasing the highest active listing.
How to fill out each checker field
Pattern code
Type the full number or blade stamp exactly as shown, including handle prefix, blade count digit, frame number, SS, CV, L, or 1/2 suffixes.
Condition
Choose the closest condition grade after checking blade loss, snap, wobble, handle cracks, pitting, buffing, replaced parts, and shield damage.
Box and papers
Mark original packaging only when the box label, pattern, era, and knife match. A loose modern box should not lift an older knife estimate.
Stamp and pattern evidence to check first
A Case XX U.S.A. pre-dot knife, a 1970s dot knife, and a 1990s long-tail-C knife should not share the same comp set. Use the tang stamp chart to set the date range, then match the frame with a pattern page.
Comparable sales checklist
Use the checker range as a starting point, then reject weak comps before adjusting the number.
Same pattern family and frame size
Same broad tang-stamp era
Similar handle material and blade steel
Comparable blade loss, cleaning, cracks, and snap
Sold or completed evidence before active asking prices
How to read the estimate
Low confidence
Use when the stamp is worn, the pattern code is missing, parts may be replaced, or sold comps do not match closely.
Typical range
Use for ordinary working knives with honest wear and enough matching examples to avoid one outlier sale.
High range
Reserve for clean, original, scarce, boxed, or desirable handle examples after pattern-specific comps support it.
For inherited groups, start with the old Case knives value guide before pricing the whole lot from one strong knife.
Check a Case knife valueFAQ
What information do I need before using the Case knife value checker?
You need clear tang-stamp wording, the pattern code, condition notes, box or paper status, and any comparable sold examples that match the same knife type.
Can the checker appraise a Case knife for insurance or probate?
No. It provides an informational resale range. Use a qualified appraiser, auction specialist, or knife dealer for insurance, estate, donation, or legal decisions.
Why did my Case knife estimate change after entering condition details?
Condition details can outweigh age. Blade loss, cleaning, cracks, weak snap, and replaced parts often reduce value more than a desirable stamp increases it.
Estimates are informational, not certified appraisals. Advertising may appear on this page, and eBay comparison links may earn a commission at no extra cost to you when affiliate tracking is available.