I've seen a Combat Master top end mounted on an ODI Viking frame. It looked pretty hideous. I would say, the value of your gun depends on who did the conversion. If it is some kind of (Detonics) factory prototype, or the conversion was done by Seecamp himself, the gun has some collector value. Since Seecamp sold the conversion to gunsmiths in kit form, the conversion might have been done by anyone. If it was well done, the gun might still have some value to someone who likes unual 1911-style pistols.