_________________"Here's why reliability is job one: A great sounding amp that breaks down goes from being a favorite piece of gear to a useless piece of crap in less time than it takes to read this sentence." -- BRUCE ZINKYthanks, but it seems that the previous owner had the amp tolex re-done and it looks like they put another tube diagram on because the stamp is missing and the chart looks in too good of condition to be the original but the chart does state it's a AA864 designating it as a possible 64 since that was the first year they made the vibrolux reverb.And the fender electric instruments is on the lower right hand corner of the face of the amp which they quit doing in 1965 when CBS bought out fender....hence the change to fender musical instruments......_IF I have my facts correct....the potentiometers and the transformer are 1962..... thank you....question I have is what year did they go from the blackface to the silverface?? Its strength lies in the sweetness and early breakup caused by the smaller transformers than the Super Reverb, Vibroverb and Pro Reverb. I have a 73/74 Dual Showman Reverb, The 35w blackface Vibrolux Reverb (VR) is the smallest member of the blackface/silverface 6L6 Fender amp family.Still, they are vintage amps requiring service and maintenance.
On the back it has a 1963 patent on it but what is giving me the headache is that the head housing (proper term??They are all very rare today and few have survived.The first amplifiers made in-house by Fender is the Woodie series, built in 1946 through 1948.A 1990 JAN B 1991 FEB C 1992 MAR D 1993 APR E 1994 MAY F 1995 JUN G 1996 JUL H 1997 AUG I 1998 SEP J 1999 OCT K 2000 NOV L 2001 DEC M 2002 N 2003 O 2004 P 2005 ALL other Fender Amplifiers can be dated by the components inside: In almost every Fender amplifier there are several EIA (manufacturer) codes followed by a date code, typically found on the speaker(s), transformer(s), tubes, caps, and occasionally pots.The EIA code will consist of 3 numbers followed by a date code of 3 or 4 numbers designating the year and the week.To give an example, a typical Oxford speaker from the ’60s will look something like: 465-217.