Picked this up a while ago when I was rebuilding my F1 box and it was the wrong sector. Cleaning out my parts today and wanted to see if it looks familiar to any of you. Looks identical to the F1 in shape except larger dimensions. Had an original ford parts tag with 0h 3575 on it and a piece of tape with 1388. Shaft diameter is 1.25".

 

OH is the part number prefix for a 1950 Lincoln. OA is 1950 Ford car part number prefix, OM is 1950 Mercury car part number prefix.

7RC-3575 .. Sector Shaft = 1948/52 F1/F2/F3