Darrell I don't remember the model Gibson amp but as a kid I would go to my local music store and there was a Gibson amp that was something like a twin with two speakers but they were at an angle facing (left & right) sounded nice.
I've had a few over the years - great gritty rock and roll sound, but never could get what I'd call a great 'clean' sound from them. They made the 79RV with reverb but no tremelo, and there was a Bell version.
(Numbers are consecutive, but all number/year matches are approximate) Be aware that these numbers, while considered by most authorities to be accurate, may be substantially off. The next three digits are the model number, without the 6 at the beginning.
Several guitars have appeared that seem to use the new dating scheme from as early as Feb. There may have been overlap between the two numbering schemes, or the earlier method may have been phased out as early as 1963. The final numbers are the sequential order of the model made during the lifespan of the model (not that year).
With the advent of labels in the late '40s, the serial number is usually found on the label, which is usually visible through the soundhole on hollowbody models.
Speaking up for those that can't speak for theirself, A.
There are several ways to determine when a Fender amp was produced.
If your amp dosen’t have a date code, flip the amp upside-down and check the transformers, and speakers for their manufacturer codes.
If possible, open up the chassis and check a few of the pots’ and capacitors’ manufacturer codes.