The 2 dials are different sizes (1016 and 5500), so this would have to be on an Air-King base. As the dial is not genuine for this model, you overpaid by quite a margin over the cost of a typical Air-King (2-3X).
The kicker is the movement. The 5500 Explorer only used the cal. 1530 (with dial labeled Precision or Super Precision I think) in the early '60s; and cal. 1520, which was never a chronometer movement. I suspect this one has the 1520. I would investigate (bring it to a watchmaker to verify) and take it back if possible to the shop for some sort of restitution, having clearly been misrepresented.