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The following number determines the model: 5 or EG for the EG models, then the sequential number for that particular model.

The year of manufacture is determined the same way for the Swamp Ash Special.

Like the CE and EG models the serial number is located on the neck plate on the back of the guitar.

The following number determines the model: 8 or SA for the Swamp Ash Special, then the sequential number for that particular model After the year prefix, these models use a code digit of "4", indicating a bolt-on neck bass.

The most effective way to date a Valco guitar or amp is by its serial number.

From the 40s until 1964, the serial could be found stamped into a small metal plate that was tacked onto the back of the headstock or the back of the cabinet.

From 1964-1968, the serial was ink-stamped onto a silver foil sticker that is found in the same place.

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Like the CE models the serial number is located on the neck plate on the back of the guitar.Please note also that the speaker cabinet serial numbers used a different progression.Please browse the Registry page for more specific data relating serial numbers to dates.The model numbers can be somewhat confusing because model numbers such as 1987 or 1959 can be mistakenly interpreted as the production year of the amplifier.Amplifiers from this era must be dated within this time span based on their features, or component manufacturers and codes, including speakers, potentiometers and transformers.