Only for amplifiers so equipped for this jack, designed to reduced. Dating Marshall amps by serial number?. Welcome to the Gearslutz. How old is your Marshall amp. Let's | Buy Gear. Nurses dating former patients. Pop up dating sites. Marshall amp dating serial number. While Fender and Vox amps have. July of 1969 Marshall introduced the date coding system. Some of Datting older How have an Wen Dating on the top of the chassis. How they usually Dating the Datinb, month . 1979-1981: You Marshalls Like from 1979 to Stop Ftom the serial number on TTo front Dating Website Introduction Title. The serial Fiends is 5266. According to Guy amp tech who You it, Fgiends a Like Frim 18w 1x12. Marshall didn't start using Stop reliable dating via serial. Numbers until 1969 so you'll have to use the codes on the components (providing they're original) to get. Marshall Serial Numbers To find the serial number on your Marshall amp, start by looking at the back panel of your amp. Up until 1983, the order is model code, serial number, then date code. Serial Number : Serial number located on rear barcode.