1954 Jefferson S Over D?

I apologize for beging a novice but I have a question regarding the 1954 jefferson s/d. I have what was noted by my father as a 1954 d/s jefferson... the coin is in vg condition and with an 10x you can see how it looks like a d/s not to be confused with the inverse s/d. Its is clearly a "d" mint with what appears to be an "s" mint underneath. My quesiton is, I dont see any post or questions about the d/s except for 1955 jeff's. So is there a chance my 1954 jeff d/s is legit or is it just a flaw. I have no decent camera yet to upload pics, but would like some feed back. I am extremely new to collecting and need all advice, I have been left with duffel bags on end of very very nice coins and proofs, ect.