I refer to a V35TC Owners Manual at hand dated May 1967 which notes a two bladed propeller. A read discloses no mention of three blades as standard or optional but does say at 8-11, Propeller blades: "The daily preflight inspection should include a careful examination of the propeller blades for nicks and scratches. "EACH" blade leading edge should receive particular attention". (my emphasis).
The three view at iv shows a two blade propeller with 7' 0" diameter.
I have a few hours in V35TC VH DLO back in 1974 which had a three blade propeller, (from memory), and was told it was for ground clearance, didn't make any difference to performance or weight. I don't know how accurate this advice was.