Epiphone used a serialnumber system for their acoustic guitars. Two or three digits were ink stamped on the neck block or blind stamped on the interior back of the Recording models, three digits (or four ?) blind stamped on the interior back of the Seville models.
Recording E s/n 94 ink stamped on the neck block
Recording C s/n 275 blind stamped on the interior back below the soundhole
NOTE: Fisch & Fred mention a four-digit Seville 4 Special (called Model 4 Special s/n 5417) on page 235 .
The Masterbilt serialnumber system did not start with the number 1000 but with the number 5000. The reason for this is unknown. The serial numbers were blind stamped on the interior back under the bass f-hole, generally below but sometimes on the (oval) label. The very early examples had no label just like the earlier Recording and Seville models.
Broadway s/n 5053 blind stamped without a label
De Luxe s/n 5369 blind stamped below the label
De Luxe s/n 6677 blind stamped on the label
From about 1934 forward, the serial numbers were ink typed directly on the label (Long Island label) or letter pressed on the label (rectangular Masterbilt label, Green label and Blue label). see pictures
Quite often the serialnumber was also blind stamped (some handwritten) on the underside of the bridgefoot. Occasionally the serialnumber was handwritten on one of the braces.
Zenith s/n 7738
Olympic s/n 6851
Olympic s/n 11690
The s/n is sometimes ink typed on a label where it should have been letter pressed. According to Wiedler Epiphone often applied a newer type label with the old s/n typed in when a guitar was brought in for repair. There are also a few cases of a s/n on an older than typical label, probably either by mistake or because they had ran out of the current type see pictures For a reason unknown a new numbering system was applied in 1944 which started with number 50.000.
NOTE: Although the Sorrentino and the Howard guitars were offered under another brand, they are part of the same serial number system.
Felix Wiedler, NY Epi Reg
Jim Fisch & L.B. Fred, The House of Stathopoulo, 1996, pp. 221-225
“While Epiphone’s SN systems for acoustic instruments and 1950s electric hollow bodies appear to be pretty straightforward, the SN systems of their other electric instruments and amps are much less so. Over the years a number of different SN systems were used.” (Wiedler)
“With the inception of the Electar line in late 1935, Epiphone began a new numbering system which was employed solely on the electric instruments (Electar, Century, Coronet, Zephyr, Kent, Harry Volpe model). This manifested itself in the form of a blind stamped number between three and five digits, usually located on the top rear of the headstock. (Fisch & Fred, The House of Stathopoulo, page 225)
Wiedler wrote us June 2013: “The Electar series started at a lower s/n than 3-digit. The earliest example I have documented is s/n 25.
Until circa 1938 the s/n stamp is located on the top edge of the headstock. When the headstock shape of the Spanish electrics changed to the center-dip style the stamp was moved to the back of the headstock.
Wiedler wrote us May 2016: “The first Electar instruments from 1935 don’t show a serial number. In c. 1936 serial numbers started possibly near SN 1 (first documented is SN 25) and reached the 7000s by the time electric instrument/amp production was virtually halted during WW2. Currently I have listed Zephyr Spanish SN 7182 as the last pre-war electric guitar.
When Epiphone restarted electric instrument production in 1946, only the Zephyr Hawaiian model carried on with the old SN system – the first documented is SN 7307. All other electric models used a new 5-6 digit SN system – with model-specific 2-3 digit prefix followed by a 3-digit serial suffix. This lasted until 1949. Around 1950 hollowbody electrics adopted the label/SN system of acoustic instruments (first documented example: Zephyr Regent SN 60182), while electric Hawaiian instruments used a new SN system starting around SN 9000.” see pictures