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I have a 1990 JCM900 100w head, serial number Y24093. I know Y = 1990. What does the rest mean? Ive found nothing but Y = 1990. .  24th week? 93 made? Is there a site that deciphers the meaning of the entire serial number?

asked 16 May 2021 at 10:09 PM

Jeff McDonough
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