Calling this a 1947 Miss Excellency "RR".
The movement is a 1947 6AK. It has 21 jewels. The case is marked "Bulova New York". Its 14 K gold filled.
The serial number on the case starts with an "H" so I don't know what to make of that.
There are no Miss Excellencies in the database that I can find but this looks like the. ad to me. The ad is 1949.