Hey guys thanks a lot for your answers! The cab is amazing and I thought it was from a newer period.
From a quick search I couldn’t find any info on how many watts it is rated. Any ideas??
If it has the original AlNiCo "Sunn Transducer" 12's, probably not very much. I don't know the actual rating, but the motor structure isn't real robust; based on looking at them I would guess maybe +/- 20 watts each?
Definitely before the trademark "R".
So what does that mean?? That is probably from the late 60s rather than 70s??
Excuse my ignorance but I’m pretty new in SUNN equipment…
I think the trademark was added for the 1969 model year, which would mean that your Sceptre cab is likely a 1968 if it doesn't have the "R" (I can't tell for sure by your photos, but it doesn't look like your cab has the trademark).
A lot of old Sunn cabs were dated inside with a grease pencil, if you open it up you might find out for sure.