So maybe it was a custom job and thus no serial number? Any ideas from the Yamaha experts here?ĭisclaimer The Guitardater Project cannot verify the authenticity of ANY Guitar, this site is simply meant as a tool to satisfy the curiosity of guitar enthusiasts. Wanted: Bass Guitars, Amps, and Accessories Wanted: Double Basses. ↳ Electric Guitar, Amps & Effects ↳ Yamaha THR Amps ↳ Electric Bass Guitar. There is a chart for serial numbers of Yamaha guitars from the faq.