Those are 700C deep v wheels laced to a coaster brake on the back with Schwalbe Delta Cruiser tires. They fit the frame perfectly.
It would be much cheaper to build your own than to pay what I would ask for this bike.
Sorry if it is taboo to post this here, but I am looking for a Sachs duomatic or Bendix blue band hub with 28 spoke holes for leadbelly. I would prefer the Sachs. If you have one, or know where to find one please let me know.