OEM?? ANCO wipers removed from 73 dart sport 340

Could be. I don't know that year in particular.
There's several threads with pictures, mostly in the sub-forum about exterior body. I've posted my '67 wipers. '67 A-bodies only got the Anco "double claw". parts books for '68-9 show either Anco or Trico could have been used. All of the Anco used a 'push button' or 'latch pin' release. OEM Industries makes repop 15 and 16" blades, but only 16" refills. Kinda silly. I haven't found the right person yet to address that, but they got 'em - fresh and new.