Hi! Just bought M-2012-39-0177-2 and registration site says invalid?


Hi there! Proud owner of a 50th Anniversary DLS1C. The serial is M-2012-39-0177-2 but the registrstion site says thats wrong?

Can you veiryf that serial?


Thank you!!

asked 05 Feb 2024 at 10:20 PM

Richie Zuccaro
Answers: 2


Hi Richie,

That is a correct serial number, I would suggest contacting servicedesk@marshall.com with this issue and a member of the team will be able to help you.


Marshall Support

answered 06 Feb 2024 at 09:10 AM



As far as I know the last character should be a letter, not a digit.

This is an information I found on reverb.com:

- The first letter indicates where the amp was manufactured (M for England, C for China, I for India, K for Korea).

- The next four digits indicate the year of production (1998, etc.).

- The next two digits indicate the week of the year during which the amp was produced (01 - 52).

- The next four digits indicate the production number.

- The final letter indicates the voltage setting (for use in different countries - see table below).

For example, a serial number of M-2002-38-1035-B would indicate an amp made in England (M) in 2002 during the 38th week of the year, production number 1035, set up for use in the United States (B).
Voltage Codes:

A 230 Volts (UK)

B 120/60 Volts (US)

C 220/50 Volts (Canada)

D 105/50/60 Volts (Japan)

E 220/60 Volts (Europe)

F 130/60 Volts (Mexico)

Z Speaker cabs (no voltage)

answered 06 Feb 2024 at 09:15 AM

Jacek Klimkiewicz (234)
Hi Jacek,

Thank you for your comment, all serial numbers end in a number not a letter, only old models will either have a letter at the start or the end to indicate which year it was made. All amplifiers which start with a M will end in a number.

Marshall Support

- Marshall Amplification 06 Feb 2024 at 11:42 AM
Thanks for correction, Marshall Team. - Jacek Klimkiewicz 06 Feb 2024 at 12:31 PM
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