Leica M3D black paint, November 2012 (1955, serial number M3D-2)
Only 4 M3D’s (M3D-1 to M3D-4) were produced by Leitz. All were custom made for LIFE magazine photojournalist David Douglas Duncan. Each was mated to a black Leicavit without the standard MP engraving. (Note the auxiliary rewind crank, presumably added by Duncan after the fact.)
If you see one on Ebay at a decent “Buy It Now” price, snap it up quick (don’t expect it to be described as “Minty” however). This M3D, with Leicavit and Summilux, was sold at auction on November 24, 2012 for 1,680,000 Euros.