It’s a JTM45. First year reissue, in ‘89. I bought it new. Still have it after 30 years. It’s one real fine sounding amp. Especially out of that ‘70 8x10 that it’s sitting on. Not that I’ve ever found a speaker that it did not sound great with.
That 8x10 is likely a 2034, which i gigged with for over 15 years!!!!!!