The chart also gives us a direction on how to start to study each model and a reference between other models.Hence trends in production techniques and hardware used can be compared.
The chart will be revised and expand as more information is discovered and confirmed.
Built in Japan and dating from the late 60s, this almost unmarked guitar features pick-ups similar to the Teisco gold foil pick-ups famously used by Ry Cooder.
It is hard to imagine today, but in the early 1960’s having an electric guitar in your home was rare.
A lot of information on this web site has been discovered from the trends in this chart.
The Teisco serial chart was reconstructed from serial numbers off Teisco guitars that have surfaced on the internet since 2007. (And at that time they didn't even have a Spectrum 5.) So what if someone recorded every spectrum 5 serial number they could find and see if it linked up?
However, in the early 1960s Teisco products became increasingly unique.