I am not an expert on SBA Dollars but to me the bottom photo looks like the carry over from the Type 2 1979 S SBA. Neither have Bulging Ends on both ends of the S and a Clear S is not a verifier for a 1981 S SBA Type 2 (IMHO).
1981 S SBA will have bulging flatten round end on one if not both ends of the S. I also find this to be one of those mystery coins looking for further thoughts.
Well I know this is a type 2 Type ones can look like the one in the second pic all the way up to filled and almost looks like a blob.
I have seen varying degrees of the filled type Markus, some are sharp around the edges and some just blobs. Probably varying degrees of die state. Good update.