The original T-100 was introduced in the late 50s as an entry-level, fully-hollow electric archtop. It had one single-coil P-90 pickup (though you could oder it with dual P-90s), a laminated maple body, and three-in-a-row tuners. They also had a Bigsby tailpiece and vibrato. Being that it was fully hollow, there were a lot of feedback issues with the original T-100.

In the early 60s Guild needed a new line to compete with Gibson's ES models, and the Starfire was born. The first Starfire was simply a T-100 updated with a sunburst finish and some new hardware. Other than that it was the same guitar. These axes are sometimes referred to as the Starfire I, or just plain Starfire - but they're all the same guitar.

The Starfire T-100 didn't last long because of the feedback issues. They also replaced the P-90s with dual humbuckers for better sound. If you're thinking about buying a Starfire T-100, be aware that many of them them have been modified and fit with better parts to improve both look and playability.

If you can find one that's both unaltered and in mint condition, it's fairly valuable from a collector's standpoint. Expect to pay between $1,500 and $5,000 for it. You might not want to play it though, unless you're into the the 1950's hollow electric sound.