Eighteen makers, 269 models, 803 serial ranges and 1,289 code entries in one place. Start from the mark you can actually see — a plate, a sticker, a code on a transformer — and read the year, the method that produced it, and the limits of that method.
Pick the witness your amp actually carries: serial plate, tube chart sticker, component code, barcode or the panel itself.
Serial tables give a range, component codes date the part that carries them, and era features bracket the makers who never published a serial table.
Every result names the system that answered, how strong it is, and the rule that limits it — including when the honest answer is that no data exists.
Fender kept no amplifier serial records before 1994. Here is the order that works on a vintage Fender: tube chart, transformer, speaker and pot codes.
2026-10-14 ↗Tube chart referenceBoth Fender tube chart cycles, letter by letter: the vintage 1951–1969 alphabet, the 1990–2015 reissue alphabet, and how to tell which one your amp is.
2026-10-14 ↗Component codesHow to read EIA component codes on transformers, speakers and pots: the format, the manufacturer numbers, the decade trap.
2026-10-14 ↗