Dating fender amplifiers by serial number
Fall 1964 Stratocaster : Gold Fender peghead decal thicker than previous "spaghetti" logo. Plastic white three layer pickguard replaces celluloid.Late 1965 Stratocaster : Peghead design enlarged significantly.
Bottom of fingerboard (part glued to maple) is flat.
Celluloid "mint green" three layer pickguard, with 11 attachment screws (some1959 transitional models have only 9 or 10 screws).
"Bullet" truss rod adjusts at peghead instead of butt-end of neck. (The Tremolux was the first Fender with built in effect: Tremelo)1956 - The Vibrolux. The Super Reverb, Deluxe Reverb and Vibroverb all emerge. Pro Reverb, Super Reverb, Champ, Vibro Champ, Bassman 10, Vibrolux Reverb, musicmaster Bass and the 75, all disc.
Mid 1974 Stratocaster : Flush pole pickups replace staggered pole pickups. So do the Professional, the Princeton and the Super in47. Along comes the Champ.1951 - The first P-bass is introduced, it'll need a new amp. 1952 - The Twin in it's not so burly early stage is released. 1958 - The Twin gets its power boost to the traditional 80 watt range.1959 - The Vibrasonic.1960 - The Concert. (The Vibro Verb is the first Fender Amp with built in reverb) 1964 - Princeton Reverb, Super and Vibrasonic discontinued. 1983 - Champ II, Bassman, Bassman 20, Bassman 50, Bassman 70, Super Bassman, Bassman 100, RGP-1 and RPW-1, all disc. 1993 - Vibro King, Tonemaster (custom shop for amps is established).
2006 amps have a small metal “Fender 60th Anniversary” button on the back plate. Early Tweeds The early green board tweed-covered amps were not lacquered. It has the same cream board inside with the same components as every other current-production Blues Junior.
The serial numbers for these amps begin with “LO,” indicating that they were made in the Fender/Sunn Lake Oswego factory. It usually applies to old vacuum tubes/valves that have gone unsold for decades. All cream board tweed Blues Juniors have a “Limited Edition” plaque on the back.Late 1971 Stratocaster :3 bolt neck with micro-tilt replaces 4 bolt system. 1976 - 300 PS 1977 - Studio Bass 1978 - Super 6 reverb and Quad reverb disc. 1980 - Known only by their numbers, the 30, the 75 and the 140 (140 only lasts one year).Die-cast 1 piece chrome Mazac tremolo replaces 2 piece steel unit. 2nd string tree added on peghead to hold G and D strings. 1968 - Bronco, Bandmaster Reverb, Dual Showman reverb. 1969 - Super Bassman, Bassman 100, Bassman 135, Bantam Bass. 1972 - Bassman 10, Vibrosonic Reverb, Super 6 reverb, Quad reverb, Bantam Bass disc. Bandmaster Reverb, Dual Showman Reverb, Super Twin, Super Twin reverb, Studio Bass, all disc. 1982 - Champ II, Super Champ, Concert, Bassman 20, RGP-1, RPW-1.A small aluminum shielding plate is installed underneath the pickguard that covers the control cavity. Also available without tremolo (known as a "hardtail" model). 1958 Stratocaster : Sunburst finish changed to three colors (red added).1959-1964 style Stratocaster Mid 1959 Statocaster : Slab Rosewood fingerboard with white "clay" position dots.Also a thin aluminum shield the size of the pickguard is installed underneath the pickguard.1961 Stratocaster : Peghead decal logo now has 2 patent numbers (2,573,254 & 2,741,146) 1962 Stratocaster : Peghead decal logo now has 3 patent numbers (2,960,900 added) Mid 1962 Stratocaster : Veneer Rosewood fingerboard.