My 1969ish Carlsbro CS60 Reverb. However this is not the PA version that is more common with these still oddball amps since this amp doesn't feature four little separate volume controls for
Vintage Carlsbro 4x12 Cab loaded with fane speakers | Reverb
Guitar, Keyboard and Disco users. - Carlsbro advertisement (1972) >> Vintage Guitar and Bass
Vintage Carlsbro 4x12 Cab loaded with fane speakers | Reverb
Vintage Carlsbro 4 X 12 Speaker Cabinet | #542042744