Superior Music Marshall Amp Serial Numbers and Dates. Marshall amps 1. 96. GIBSON ELECTRIC SERIALIZATION 1 GIBSON GIBSON ELECTRIC SERIALIZATIONGIBSON ELECTRIC SERIALIZATION, cont. Identifying Gibson instruments by serial number is tricky at. Serial Number We do not have serial number information on Marshall Amps before 1. The serial number is usually located on the back panel of the. From July 1. 96. 9 to December 1. From Jan 1. 98. 4 to October 1. Letters I O were. Model Code. Model. Type. A or A. 2. Watt. RI. Reissue. S or SA. Watt. SB or SBA. 1. Watt Super Bass. SL or SLA. Watt Super Lead. SP. Super PAST or STA. Python Based 3D Game Engine. Information about serial numbers and year Fender guitars, encoder. In March 1985, CBS sold Fender to a group of private investors. The serial numbers do not reflect this change Fender continued to make instruments using existing. Next, check for the serial number on the back of the headstock. It should have a serial number on top. Modern numbers are 9 digits but oldervintage Gibson guitars. Learn more about Orville and Orville by Gibson guitars here. Gibson Serial Numbers Year' title='Gibson Serial Numbers Year' />Watt Tremolo. T or TA. Watt Tremolo. Date Code. Year. A1. C1. 97. 1D1. 97. 2E1. Gibson Serial Number Identifier for Guitars, Banjos, Basses, Mandolins etc. Finding the year your Gibson was made. F1. 97. 4G1. 97. 5H1. J1. 97. 7K1. 97. 8L1. M1. 98. 0 Date Code. Year. N1. 98. 1P1. R1. 98. 3S1. 98. 4T1. U1. 98. 6V1. 98. 7W1. X1. 98. 9Y1. 99. 0Z1. Marshall amps with a Barcode 1. The first two numbers are the year, and the last two. Marshall amps with a Barcode 1. Present In 1. 99. Marshall changed to the latest dating system which is. It is simply the year. Example 1. 99. 8 3.