The earliest Revere Ware, produced between 1939 and 1947 used the older style handle with two screws close together at the front of the handle. Here you can see these alongside the newer handles used from 1947 until 1968 that had the two screws on opposite ends of the handles.
You can find a tutorial on adapting the handles on these older pots here.
The earliest pans have the Riding Revere stamp on the bottom, soon replaced by the early Revere Ware stamp.
In 1946 Revere Ware started using the more familiar stamp on the bottom that includes a circle and either the words “Process Patent” or “Pat. Pend.” Post 1968 Revere Ware has a much simpler logo that does not include a circle or any reference to a patent.
This is the most likely type of vintage Revere Ware you will come across, and the most useful as replacement handles are available from us, as opposed to the earlier style.