"To many Leica specialists, the gray MD represents one of the most beautiful Leicas ever manufactured", Lager, Vol. I, pg. 220.
This rare Leica MD Gray Hammertone with Visoflex III sold by @everardauctions on iGavel for $187,200. Leitz Wetzlar production records list only ten MD bodies 1102501-1102510 shipped to Leitz Canada in October 1964. Visoflex III housings with 4x magnifiers were supplied in a matching gray finish. The Visoflex front flange was milled out at the six o'clock position; the purpose of this cutout is unknown. Written records (now destroyed) of the former American Leitz and Leitz Rockleigh indicate the majority of these special gray MD's were received and then forwarded to a Leica dealer in the Chicago area for sale. Both camera and Visoflex III are illustrated in color plates of Lager, Volume I, page 159. Visoflex also illustrated in Lager, Volume I, page 221.