Serial numbers from 70' and 80's era Epiphone guitars made in Japan are not supported. The reason for this is that there is no reliable documentation from this time period.
Stammt entweder aus der Zeit, oder du haste die S/N falsch abgetippt. Bilder wären hilfreich!
EDIT:
Epiphone
Most regular production models since ca. 1993. Many '80s and early '90s serial numbers may follow a similar scheme, but may not include a factory ID code.
FYYMMRRRR
F= Factory code (this can be 2 letters as well)
YY= year of manufacture (this can also be just 1 digit for '90s models)
MM= month of manufacture
R= ranking number (may be more or less digits, not necessarily indicative of total units produced)
Example - S02021234 was issued in Feb. 2002.
Warscheinlich doch Bj. 95, da Samick seit 2004 nicht mehr Epiphones baut, also "05" für 2005 nicht in Frage kommt.
