I was wondering if someone might know what model this gillette is that I purchased at an antique store.
It is a 48 - 50 Aristocrat or 50 Aristocrat depending if it says Pat Nos on Package or Pat Nos on Pkg. If Package then 48 - 50, Pkg then 50. They are both the same razor shave wise regardless. Handle style was first introduced in 48 and they didn't formally date code the razors until 51. This one lacks date codes on the base plate so that is the range. You did well on the razor for $20 also. They usually sell for more in this condition with or without a case on ebay. If you catch the right buy it now or auction you can get this razor a little cheaper but on average they sell for $40 and up. Everything you didn't want to know and weren't going to ask about these razors, https://theshaveden.com/forums/threads/us-gillette-aristocrat-tto-timeline.61682/#post-1569481