Amplifiers dating vox amps
Marshall used letters as a date code to represent year of production.It's important to note that, prior to 1984, this letter came last.This will give you an approximate idea of the era during which your amp was manufactured.It's also one more piece of evidence to pair with the serial number to corroborate the actual year.If the speakers in your Marshall cabinet or combo are original, they can provide another piece of evidence when determining the date of manufacture.As many cabinets did not have official serial numbers before 1992, this can be especially helpful in dating earlier specimens.The first Marshall amps were made in England starting in 1962.
Keep in mind that no reliable serial number information exists for pre-1969 Marshall amps, so if your amp doesn't have a number matching one of the formats below, it is likely pre-1969 and identifiable by features rather than serial number.From January 1965 to June 1969, model codes were used but no known serial numbers accompanied them.This era saw the advent of Plexiglas panels (giving rise to the "Plexi" name) and four-digit model numbers.For example, the number S/A 8481 E tells us that this is 50W amp (S/A) made in 1973 (E), production number 8481.From January 1984 to September 1992, the three-part coding was used by Marshall but the date code letter was moved from the end to the middle. This would indicate a 100W Super Lead (SL/A) built in 1989 (X), production number 10059.
Starting in July 1969, Marshall starting using official serial codes.