I recently picked this razor up in a lot of razors that I purchased. The razor appears to be a double ring and has both the Pat Nov 4 '15 on the barrel and a serial number of 53954 which would put it from 1905. Problem is, when screwed down snuggly, there is a gap between the base plate and cap. My guess is, based on the pins, that the cap is actually from a single ring or old type. Am I correct in the thought? Any other reason why the cap would not snug tightly other than perhaps the female threads are shot? It doesn't give the impression that the threads are bad. Any help anyone could provide (many of you have more knowledge about these things than I do) would be greatly appreciated. Thanks!