1965 AC Compressor Pulley

You're a bit confused. Pre 69 are all single groove. 70 and up are all double groove.
The top pic shows a single
He's not confused....some pre-1969 applications used the double pulley... the 1965 a-body 273 with factory air is an example. Top picture is a double pulley with only one belt installed. He is asking for the correct stuff.