I'm sorry for posting twice but I finally seen what it was I've got out a 30 X Triple Loop you can clearly c a d and they s over it I took some better pictures
If you could see it up close there's a line running through the s in around in connecting to the other part which makes it look like a d kind of like the 1960 over mint marks its that thin line connecting all the way there is a die chip but then there's a thin line going all the way around also