Came across an interesting web page on Selmer Guitars
for a more detailed read go here:
Just a sample below...
Some background and observations about
the main Selmer six-string guitar models
A small attempt at putting into words some thoughts about these guitars, for the benefit of those who have yet had the opportunity to to spend much time with them.
The Maccaferri model, with the large D-shaped soundhole, was originally designed to accommodate Mario Maccaferri's patented Internal Resonator. In many cases however, it seems that the guitar worked better for players without that resonator, as few original Selmers retain one. We believe this is due to a production error that caused them to come loose and buzz, provoking their prompt and sometime brutal removal. That said, the basic 1932-33 D-hole guitar has 12 frets and a 648mm (25.5") scale, very similar to our contemporary Martin/Gibson/Fender scales, with a "classical-width" fingerboard. Necks on the early Selmers were generally quite large. The few with maple bodies had maple necks, generally all other necks were walnut.
pay no attention to the moiréThe later Selmer model, with the small vertical oval soundhole, never had a resonator; in fact, it was a design repudiation of the resonator model. Around late 1933, after a handful of transitional models, it was offered with the longer 670mm (26.4") scale. Once it was available, this was the model that Django really played. Almost all Selmers ever made are this model. Virtually all Selmer guitars, early and late, were of laminated Indian rosewood with walnut necks. There exist a few very late ones with solid rosewood necks and a few rare all-mahogany or birdseye maple guitars with matching maple necks. Selmer tops were always solid European spruce.
In terms of sound, the two main models differ more to the player than to the listener. Because of how the soundhole affects the way the sound emanates from the guitar's body, the player hears perhaps more accurately what the D-hole model sounds like to others. By contrast, with its small soundhole, the oval-hole model seems to project more directionally. It's generally agreed that the longer scale on the oval-hole model allows it to be played harder as well.
By far the most important element in a guitar's sound (besides the player!) is the top. All Selmer models had solid French spruce tops. The tonewoods of the body certainly color that sound, and these tonal differences are again more evident to the player than to the listener.
To most players familiar with the tonal contrast of a normal American-style flattop and a normal American-style archtop, the Selmer-style guitars define a third point on a triangle - as different from the former two as they are from each other. First impressions are generally that they sound "trebly," but it should be noted that the style of playing these guitars is fundamentally different- particularly with the oval-hole model - than what is usually employed playing more conventional flattop and archtop instruments. Once the picking hand's "sweet spot" is found, the full dynamic range appears.