Supposedly there were only 7 4-speed 1960 300F cars made. 6 hardtops and one convertible. The convertible wasn't supposed to get it but one turned up.

The other 300 shown is a 3-speed. I believe that car pictured is a '61.

There was a B-W T10 4-speed available in some 1963 models before the 833 was ready.