Email: billy guitars. The charts below will explain how to read the serial numbers and decode the model numbers. From July of until September of the date code system included a letter of the alphabet in the serial number. Here are the letters with their corresponding years. The letter B was skipped because the letter A was used for 18 months and the letters I, O and Q were also skipped to avoid any confusion being mistaken for numbers. The serial number on a Marshall amp is usually located on the back panel of the chassis but some amplifiers made between and had the number on the front panel.
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Serial Numbers Does it have a serial number stamped on the chassis? Marshall amps began featuring aluminum back panels in Serial numbers began appearing on the back panels in July Note that some models produced from had serial numbers stamped on the front panel to the left of the power switch.
We do not have serial number information on Marshall Amps before The serial number is usually located on the back panel of the chassis but some amplifiers made between had them on the front panel. From July to December , the date letter was put after the serial number. Jul 18, If your amp says Model on the inside, that does not mean it was made in This is probably the biggest area of confusion when dating Marshall amps. True serial numbers weren't really used by Marshall until July , so specimens made prior to that can only be accurately dated to a fuzzy span of several years. There are easy ways to determine date of your Marshall amplifier's manufacture by the serial number. The charts below will explain how to read the serial numbers and decode the model numbers. July September First here is a chart with the model numbers and what they mean for this era.
How to read the serial number Marshall used a coding system that provided a model, b serial number, and c manufacture date. This a b c sequence began in and was valid through How to read the serial number Inthe order of the serial number components changed to a c bbut the method used to determine the values for a and c remain the same.
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This system was used untilwhen a bar code system was introduced. Possible values are shown in the table below.
MARSHALL DATE CODES Early Marshall through the JCM series July of Marshall introduced the date coding system. Some of the older amps have an inspection sticker on the top of the chassis and they usually have the day, month and year the amp was made or inspected. Feb 05, Hey guys, I was curious is anyone could help me out with a problem I'm having. I have a JCM head that has an odd looking serial number. I'm trying to figure out what year my head is but I keep running into a recurring problem. Everything I can find about serial numbers states that the letter in the serial number is always first. Jan 23, Marshall amps began featuring aluminum back panels in Serial numbers began appearing on the back panels in July Note that some models produced from had serial numbers stamped on the front panel (to the left of the power switch). How to read the serial number .
Starting in until Marshall switched over to a new serial number system. The new system designated the year of manufacture in the first two digits of the number and the week of manufacture in the last two.
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This number is found under the bar code. Photo credit: SlashMarshall.
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In Marshall changed to the latest date code system. It is very easy to read because the year is directly followed by the week.
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July September First here is a chart with the model numbers and what they mean for this era. For example: Year of manufacture is in the 42 nd week.
For example: Year of manufacture is in the 22 nd week. I am in every other Saturday. I do all the tech work myself so you deal directly with me.
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Reissue Series. We recently wrote an article detailing that rich history which you can read herebut for those simply looking to figure out how old their Marshall amp is, we offer this shortcut. The guide below will help you quickly and clearly date Marshall amps and cabinets, without us waxing poetic about their influence.
The best approach is to cross-reference the serial number with known features for the model during different eras and the personal account of previous owners. Getting the correct year is one thing, but getting the story behind an amp is the fun part.
The guide for that is much simpler: be nice, ask questions, offer beer. If you have absolutely no idea whether your Marshall is old or new, a good place to start is the model name or series.
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.
The first Marshall amps were made in England starting in Production has continued there uninterrupted through today, though some lower-priced models are now made in China, India or Korea, depending on the series.
Some amps won't fit into these series like the recent Class 5 Combo or various signature and limited edition modelsso using the serial number will be your best bet to hone in on a specific date of manufacture.
To find the serial number on your Marshall amp, start by looking at the back panel of your amp. For models made between -the serial number will be on the front panel. Keep in mind that no reliable serial number information exists for pre Marshall amps, so if your amp doesn't have a number matching one of the formats below, it is likely pre and identifiable by features rather than serial number.
Click on the links here to jump directly to the serial number style that matches your instrument:. The earliest Marshall amp models did not have model codes or any official serialization, though some models had a simple sequential four-digit numbering system inside the back panel.
These numbers supposedly started with and progressed from there, starting with at the beginning of Often these specimens produced between October and December had an offset chassis. Look for original black levant covering, a gray grille and the old block-style Marshall logo. From January to Junemodel 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.
Marshall amp serial dating
Amps from this era still have the block-style Marshall logo and a centered chassis. The model codes below should help you identify which model you have, while the characteristics described for each year should help with dating.
Starting in JulyMarshall starting using official serial codes.