If they were in original bank wrappers they could be
BU's and not reprocessed. One good way to tell if not replated
would be to look at the ouside outer edge of the coins. This is where you now want to see a slight touch of rust there arond the outer edge.
This part of the coin had no zinc coat when it was punched and is now the steel. Even a BU coin would develop some slight rust on it's outer edge. A reprocessed one would be covered with zinc. and would
not show rust areas. These are very small so look carefully. Of course there is always a chance that even a replated one could have gotten a scratch or some wear off of the zinc.