Dating a fender amplifier
In addition Greg Gagliano sent me the Rivera-era-relevant numbers from his huge research info, for which, along with his friendly encouragement over several years, I thank him.His info (rightly passed on to me without details of the amps' owners) still represents about a seventh of my database. Compared to my estimate of the total made, that's more than one in forty.So, with my dreams of being A Published Author in shreds, I might as well make what I've got available to folks.
and these changes are often disclosed and of a non-malicious nature.Other things to look for include chasses placed in cabinets from a different year, “doctored” tube charts, non-original control plates (usually reproductions) on silverface amps, original transformer bell ends (they have correct date codes, of course) on non-original transformers, and non-original knobs (either repro or silverface knobs on blackface amps).unusual things can be found such as the empty “Pulse Adjust” hole on the rear of early ’60 brown amps, the “middle” volume control, use of tweed style grill cloth, strange non-documented transitional circuits, and changes in tolex color including the super-rare cream colored “brown” tolex that is found on some late ’60 amps. Given that people may refer to this information seeking specific production quantities of amps they are curious about, it should be pointed out that the serial numbers apply to chassis types, and not specifically to amplifier models.Looking at serial numbers next to the ’60 5G5 brown Pro Amp for example, we see numbers ranging from 00001 to 02000, suggesting that there are 2000 of these amplifiers made in ’60.Eventually, I thought, I'll get a rough idea what the highest and lowest s/ns were.Subtract one from the other and I'll have a rough-cut figure for how many were made. PRII owners were kind enough to start sending their serial numbers in.