after a long time without an orange amp (played an OR120 for a few years) I wanted to have my old fat and loud sound back. So I have bought an OR120M Overdrive one week ago.
But now I am wondering if there is a chance to find the correct serial number of my amp?
There is only a sticker which says: 210450 but that makes no sense - someone removed the original serial number. Under the sticker there where 5 scratched numbers which cannot be identified anymore

I have checked the O.M.I Inspection letter - it says 19.12.77
Is there a chance to find the correct serial?
Many thanks for your help
Regards
Marko