My Aristocrat was thought to be a #16, but now I think it might be a #15, (if I understand this website correctly).
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Here is a couple of photos of my razor. . .
The following image is from his website showing the ( Aristocrat #15 ) as seen below:
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Another razor I had incorrect is my a Gillette #58 seen below: .
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I thought it was from 1953, but according to ( 1953 model ) the 1953 model was aluminum.
There seems to be 2 other models of the Gillette No.58 razor, one from 1955 and one from 1956. The ( 1955 model ). does NOT have the loop for holding the razor inside the case as seen below:
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The best I can tell, my razor is a ( 1956 model ). as it does have the loop for holding the razor inside the case as seen below:
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In summary, it seems I have a Gillete Aristocrat #15 from 1948 and a Gillete No.58 from 1956. Please, let me know if you have any other information about these razors or if something needs to be corrected.

