Have been working trying to sort these out (maybe for a JOMSA article). Here is my basic working typology (for comment and information):
Type 1 RPR were serial numbered 1947-49
Type 2 RPR were no longer numbered and they had a simple closure device (hooked pin on the reverse), 1950-59
Type 3 RPR had the full close device on the reverse with a jewler-quality catch that encloses the pin, 1960-65.
Type 4 was the RSR variation, 1966-89.
THe 1st class was silver-gilt, 2nd class silver, and 3rd class bronze.
When I get around to it, I'll be posting more examples.
Type 1 RPR were serial numbered 1947-49
Type 2 RPR were no longer numbered and they had a simple closure device (hooked pin on the reverse), 1950-59
Type 3 RPR had the full close device on the reverse with a jewler-quality catch that encloses the pin, 1960-65.
Type 4 was the RSR variation, 1966-89.
THe 1st class was silver-gilt, 2nd class silver, and 3rd class bronze.
When I get around to it, I'll be posting more examples.
