Another practical consideration is the very small DOF of this lens. The small base RF in the Leica-style SM's wouldn't give the focusing accuracy needed.
When you realize the sheer size of the lens, it would look silly on something like a IIIf.... really.
I'm guessing the poster meant M mount. Those turn up on eBay occasionally, but a simpler option is to find a nice lens and have it converted at probably ~$250 cost. Don't be too tempted by the lower cost of the TV version, unless you have a good price on conversion. The TV version does not have either a RF cam nor the cut rear element, and would require possibly some extra cost to convert.
I'm not familiar with the M mount lens, so don't know what was done to it. I do know that a great many lenses seem to have been adapted, which kind of makes that old story of how poor the lens is look somewhat strange. If it was good enough for Leica shooters, how bad could it be.....
Harry