I saw these work lamps on EBAY: “Hall Visor Light Pair Massey Ferguson TO 35 F40 50 65 85 88 90 754666M1 http://r.ebay.com/OBvyuu.” The seller claims they are HALL visor headlights for a TO-35. Is he correct?
Yes, this Hall lamp design was introduced around 1961 or 1962. They replaced the Hall lamp with the bezel attached with 2 screws. The new design has a shell that is a bit deeper than the earlier design. The ball assembly in the headlight shell is very similar to, if not identical to, the design used in the earlier Hall design.
There was a new combination work light/taillight design that accompanied this new headlight design that has a red plastic hood that tips down over the sealed beam to create a taillight. The red hood is flipped back over the shell when the light is being used as a work light. The new combination work light/taillight was mounted on the left fender. These new design headlights were used in the last series of two digit tractors, MF-25, 35, 50, 65, 85, 88, Super 90. and the tractors produced for Massey Ferguson by Oliver and Minneapolis Moline.