It’s unknown if the tweed covering was a mistake (“Oops, I thought this was a 4x10 Bassman cabinet that I was covering”) or intentional, perhaps as a special order.
Non-Schumacher transformers – It’s been universally accepted that Fender only used Schumacher transformers on amps made in the 1960s and 1970s.
The early silverface amps can be identified by the aluminum trim strip around the perimeter of the grill, the silver and blue grill, and black vertical lines silk-screened onto the front of the control panel.
Besides, no article in the Dating Fender Amps by Serial Number series would be complete without some interesting information, n’est ce pas?
I promise the tables will still be there after you finish reading.
Okay, I know you’re all just dying to skip ahead to the serial number tables but try to contain your excitement and read through the article first.
In the meantime, we have discovered many fascinating factoids about Fender amps and we'll probably learn a lot more as our research continues. Early silver face amps: The silverface amps appear to have been introduced as early as April 1967 (yes, April!
) and by the Fall of 1967 the conversion from blackface to silverface cosmetics was completed.