That bow is the second version of Marksman's answer to the original
Hoyt Gold Medalist (the wood riser one) around 1965 I recall. First version was too close a copy the
Hoyt and, as I understood, Earl
Hoyt objected and M'n altered their design to differentiate their product. This bow seemed favoured by folks using shorter arrows, the
Hoyt by the lanky ones. Definitely NOT a barebow riser, just the early development of the twin rod stabiliser set-up. The adjustable pressure plate was a new gimmick then, pre Berger's button.