These serial numbers are easily recognized as a white sticker with a black border, usually found on the back of the headstock or the heel of the neck.Being a sticker, many are ripped off or wear off over the years.
However, as 1990 approached, the use of one digit for the year presented the issue of repeat serial numbers.
RRRR = production number CZECH REPUBLIC: B= Bohêmia Musico-Delicia KOREA: I= Saein, U=Unsung, S=Samick, P or R=Peerless CHINA: DW=Dea Won, EA=Gibson/Qing Dao (Acoustic guitar), EE=Gibson/Qing Dao (Electric guitar), MC=Muse, SJ=Sae Jung, Z=Zaozhuang Saehan, BW=China UC=Unsung China MR = Mirr factory JAPAN: No letter or F=Fuji Gen, J or T=Terada INDONESIA: SI=Samick (Bogor factory) This newest serial number system used by Epiphone is not yet completely deciphered.' F' doesn't refer to ' Fine, Korea' - nor to ' Fuji-gen, Japan' - New "F" models are made in China.
This serial number system doesn't exactly tell the year - and doesn't tell the month at all.
They were made by Terada and usually have an Orange Epiphone label.
Epiphone is one of the widely known guitar manufacturers.