Read the instrument. Follow the evidence.
Greco Serial Number Lookup: Guitar Year & Origin
Read the three documented vintage Japanese electric-guitar serial systems, including month codes and ambiguous 1980s/1990s year digits.
Browse Greco manuals and guides ↗Historical and current systems
What’s marked on your instrument?
Greco vintage Japanese electric guitars and basses covered by the specialist’s photographed examples.
Check the source era
What the research
supports and leaves open.
- These are specialist-researched formats rather than a Greco-issued individual-instrument database. Confirm the Japanese electric/bass family and physical features.
- Before the mid-1970s many Grecos have no serial. Some later Japanese and Korean examples also lack a serial. Missing numbers do not date an instrument or establish authenticity.
- A five-digit serial can indicate either the 1980s or the early 1990s. Both years are retained where the documented eras overlap.
- The final digits are a sequence field in this format, not a verified lifetime total, batch size or exact model.
- The month letter is not a factory code. A Greco serial alone is not sufficient evidence for Fujigen, Matsumoku, Tokai or Cort manufacture.
- Acoustic, export, modern and unusual formats are not forced into these vintage electric-guitar systems; use catalog and label evidence for them.
- The source describes a mid-1975 introduction without a precise month cutoff. Automatic month dating starts at 1976; use manual feature comparison for transitional 1975 instruments.
Research reviewed October 16, 2026. This independent tool applies published conventions and ranges; it does not search a manufacturer’s private instrument registry.
Research references
Vintage Japanese Greco: month letter and two-digit year
Documented Japanese electric / bass letter-plus-six-digit format, 1976–1999.
The initial letter is the month, not a factory. A matching shape supplies an approximate production month and year; exact model and supplier remain undetermined. The source describes a mid-1975 start without an exact cutoff, so transitional 1975 serials need manual comparison.
Vintage Japanese Greco: five-digit ambiguous year
Confirmed Japanese vintage electric / bass five-digit format, 1980–1994.
The first digit repeats across the 1980s and early 1990s. Both documented years are retained; construction, logo and catalogs can resolve the decade.
Vintage Greco: month letter and single year digit, 1984–1985
Documented mid-1980s Japanese electric letter-plus-five-digit format.
The specialist’s photographed C51020 example is March 1985. This short format is restricted to its documented 1984–1985 era.
Read your result with context
Greco serial questions
Can the serial identify my exact model?
Most formats provide a period, sequence or production clue. Where a published system encodes a model or model family, the result identifies that association and links to a manual search. You can also enter the separately marked model name.
Why do several years fit?
Some manufacturers reused ranges or year digits. A date range or several candidates are retained when the sources cannot narrow them. A year supplied from your records is labelled as user context.
Does the map locate the exact factory?
The map shows the supported country or geographic area at the precision stated. It does not establish that a historical instrument passed through a particular building.
Can I share this lookup?
After a lookup, use “Copy share link.” The address contains #serial= and any supplied context. Opening it runs the same lookup; POST results are not shared cached query-string pages.
Does an unmatched number mean a counterfeit?
No. Published serial guides have gaps, and replacement components or unusual runs can carry different markings. Authenticity and originality require more evidence than a serial format.