Campagnolo 52/42 crankset C-Record with engraved logo. Some wear from use. From other listings, I think this is a first-generation C-Record crankset.

Just got this information from a helpful eBay'er -

You are correct, it is first generation from 1985 specifically. First gen cranks were made from 1984 to 1986. The "11" in the square on the back of the arm indicates 1985. 1984 is "4" in a circle and 1986 is "22" in a square.