Gretsch 7506 Acoustic guitar from 1972 with an unusual bridge.

This Gretsch 7506 initially caught my eye as it was not what I think of when I see the words "Gretsch" and "Acoustic" together. I'm used to the more ubiquitous triangular sound-hole that I thought was common to all of their flattop offerings. 

Again, I stand corrected.

Here we have a very traditional folk acoustic guitar. This Made in the USA guitar has a couple of Gretsch hints, the headstock, the back access panel to the truss adjustment, and the 3 piece sadd..................le......what? Is? Going on?

Apparently I'd never seen the Tri-Saddle that they used on their acoustic guitars in the early 1970s. Is this extremly rare, or have i just missed it all these years?

Currently listyed for $1000 Canadian dollars.

R.W. Haller