matchless/ajs serial numbers

i am trying to figure out the year of some parts, and cannot find anywhere online that has serial numbers for these bikes! i know it's a g12 650. anyone here know where i can look? thanks in advance, tavis.

Matchless serial number/dating

I'd start with the AJS/Matchless club.

http://www.ajsmoc.com/usvariants.html

Don't forget to go to the 22nd annual All British Clubmans Show in San Jose, Mar 28. I'm sure the AJS Matchless club will have a booth there. Info at www.bsaocnc.org

Not far from you -

David
Brentwood, Ca 94513