Read the tang stamp
Record exact wording, dots, X marks, U.S.A. lines, and lightning-S marks. Do not turn a worn stamp into a precise year.
Case Knife Identification and Value Guide
A Case knife value starts with identification, not a price guess. Date the tang stamp, decode the pattern number, grade condition, then compare similar market evidence before deciding whether to sell, hold, clean, or seek a formal appraisal.
Four-step identification workflow
Decode the pattern code
Use the first digits, blade count, frame number, and suffixes to match the right Case pattern family before comparing prices.
Grade condition honestly
Blade loss, weak snap, cracks, pitting, cleaning, replaced parts, and missing boxes usually matter more than optimistic guide prices.
Check comps last
Prefer matching sold examples. Treat active listings as demand clues and ignore lots, parts knives, and unrelated Case-branded items.
Tang stamp clues to record first
Case stamps are useful, but they are not serial numbers. Photograph both sides of the tang and keep uncertainty visible when wear hides dots or stamp lines.
Case Tested XX era
1920-1940Use the Tested XX wording as a broad 1920-1940 production signal.
CASE TESTED XX or similar Tested XX wordingplain steel-stamp look without U.S.A. lineno dots or X date symbols
Case XX era
1940-1964Use CASE XX without dot dating as a broad 1940-1964 clue for folding knives.
CASE XX wordingno U.S.A. line on most pocket-knife stampsno dot dating symbols
CASE XX U.S.A. pre-dot era
1965-1969CASE XX over U.S.A. with no dots generally points to 1965-1969.
CASE XX over U.S.A.round C stylenormal S shape
1970s round-C dot dating
1970-1979Ten dots indicate 1970; one dot was removed each year through one dot in 1979.
CASE XX over U.S.A.round C stylenormal S shape
1980s lightning-S dot dating
1980-1989Ten dots indicate 1980; one dot was removed each year through one dot in 1989.
CASE XX and U.S.A. wordingsquare C stylelightning-bolt S in CASE and often U.S.A.
Actual-year stamped transition
1990-1993Use the stamped year when it is plainly present on the tang.
CASE XX and U.S.A. wordingactual year numerals such as 1990, 1991, 1992, or 1993no normal dot countdown on most regular-production examples
Pattern code and condition checks
V1 pattern families
The checker recognizes common Case families and preserves unknown suffixes instead of discarding them.
TrapperStockmanPeanutCanoeCheetahCongressMuskrat
Condition evidence to capture
- Full blade profile and tip shape
- Strong snap, centered blades, and wobble
- Cracks, missing shields, loose pins, and bolster damage
- Rust, pitting, buffing, sanding, and blade etches
- Original box, papers, display material, or provenance
Avoid common value mistakes
Pricing every CASE XX knife as rareUsing active asking prices as final valueComparing a cleaned user to mint boxed examplesIgnoring frame-size differences inside the same pattern family
When stamp, pattern, and condition evidence conflict, keep the estimate conservative. A worn rare-era knife can sell below a clean common-era knife.
Check your Case knife valueFAQ
How do I identify an old Case knife?
Read the tang stamp, count dots or X marks when present, parse the pattern code, then compare handle, blade, and shield details against the same era.
Does a Case tang stamp give an exact year?
Some dot and X systems can narrow the year, but older Tested and CASE XX stamps usually produce a range that needs pattern confirmation.
What affects Case knife value the most?
Exact pattern, era, handle material, blade loss, snap, originality, cleaning, box or papers, and verified sold comps carry the most weight.
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.