As Historian of The National Press Photographers Assoc., Faber worked closely with the White House Press Photographers Assoc. Many White House photographers were interviewed for his articles and books. Faber also redesigned the White House photo lab during the Nixon administration in his capacity as senior press representative for Kodak. My thanks to Erich Faber, John's son, for sharing this information. 64 Black F's are hard to find, and the production is unknown.
More research needs to be done on the production.
If you have a Black 64 Nikon F, please email me the serial number. Some 65's have unusually dull chrome, much duller than the cameras which preceded or followed. The red dot immediately before the serial number means these cameras can mount the Photomic T finder. Specifically the modification was a lowering of the raised lip along the back edge of the finder cavity to top plate level. Nikon offered it at the time as a standard upgrade, but sometimes you find abused cameras that simply had it done with a file.