Need help dating this 215b cab serial K72419

[thefeedbacker]

Had it for a little now, i havent seen anyone who had anything similar. Please help me out (K72419)

[EdBass]

1979 - 1984 as far as I can tell from a quick check of the catalog thread. The serial number doesn't really help with old Sunn gear, they were kind of random and there aren't any records of serial number dating that I've heard of.
Is the actual date critical? Post a pic, someone here might notice some tell tale cosmetic clue.

[Isaac]

You might also try opening up the cabinet. Inside my old Sunn PA cabinets, there's a date and initials. In one case, there's a sentence complaining about how cold it was in the factory on the day that cabinet was built!

[loudthud]

There might be a date code on the speakers.