Dating silverface fender valentine day dating dress up game
Fender never printed any since there were plenty of leftover AB763 tube charts available and these were used well into 1969.Although the cosmetics changed, the circuits remained unaltered from the blackface circuits on the earliest silverface amps.These amps have AB763 tube charts and normally any silverface amp made prior to May 1968 will have the AB763 (a.k.a. After April 1968, most of the big Fender amps received the AC568 circuit, which is a semi-cathode biased design.
Again, I would like to thank everyone who responded to our request for data as outlined in Parts 1 and 2.One clue that can be used is the ink stamped chassis date code that is usually located in the chassis, but is sometimes found on the underside of the chassis behind the tubes.These read something like T020366 or F034267 where the "66" and "67" denote the year and the "03" and "42" denote week of the year.Also, the different component values could be due to a necessary substitution on the production line when a particular value was out of stock. These changes have been observed on tweed, brown/blonde, and blackface models.Often the differences are minor such as small changes in resistor or capacitor values.