AC Compressor Pulley and/or Pump

RedFish said

I don't see a double groove pulley in that pic. I see a single belt pulley with a magnetic clutch disc in front. The early setups were single belt along with stationary idlers that increase surface area and tension idlers to help prevent slippage.
When the matched pair of belts came later those carried the alternator too.

Click to expand...

The picture is definitely of a dual groove pulley. It's just missing one of the belts. You can see that the belt that's there goes to the alternator, not to an idler pulley like the single groove setup.

The rest of the pictures from that car are in my other thread along with opinions and links.
http://www.forabodiesonly.com/mopar/showthread.php?t=163546
My car is a very late 65 car, built in late June, if that makes a difference. But let's move the discussion about which style is correct to the other thread.