just saw you live in Texas i guess its your turn to be without power did you see how Huston city was all bright and happy while you regular folks have to be stuck in the dark not right the rich bribed and won.
I don't think it's a D over S. 1955 is the last D/S Jefferson Nickel listed at both doubleddie.com and varietyvista.com. If there was a 1970 D/S I believe someone would have found it by now. You could check your coin to the RPMs listed here:https://doubleddie.com/310201.html
I don't know, you could be wasting you time but, Here's how to send in for attribution . It's will cost you a little bit though. Wexler's Coins and Die Varieties (doubleddie.com)
Never said I was an expert . I posted this quarter once believing like you that it was worth something , not ! I forgot the explanation. More will chime in .