Without any more pics I would say it has the spires all bashed/ground down and the outer lip is definitely thickened/reduced. The columnella is shortened.
The hole in the side looks like a broken out hafting hole and the end does look much more worked/bashed, perhaps a suggestion of what had been a bevel. Due to the hafting hole and maybe the cracking of the outer lip it was discarded. what cha think!?! Looks like a very typical Tampa Bay lightning whelk hammer. It does not appear to have the hafting notch in the upper lip, but many do not especially the smaller ones, cause they've thickened the outer lip over and over as it wore away, might have had a notch when "1st Stage" and it gets to a point where the hafting notch makes little difference. Looks no brainer to me if found at sites I know of.
All that being said, if it was found in a mine or nowhere near a site..........as GB said "Context".