Are they only a few inches long? They look unfamiliar to me... I know AAA did a series of clams and such but I think they were much larger than those and would be stamped with the indicative AAA pyramid.
Very nice though! Another set to hunt down for many here...
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-"I loathe people who keep dogs. They are cowards who haven’t got the guts to bite people themselves."-August Strindberg (However, anyone who knows me knows I love dogs
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-“We can try to kill all that is native, string it up by its hind legs for all to see, but spirit howls and wildness endures.”-Anonymous