I believe this is just a little whimsy of sorts, carved I'm not sure how, but with the two cross pieces impossible to remove. I love how positively ancient it seems, as if carved then thrown into the ocean only to be retrieved many many years later along with some bits of driftwood. A nice little thing to hold in the hand--I think one might consider it an early fidget toy--or carry around in a pocket.

2 13/16" (when compressed) x 1 3/4" x 15/16" and in wonderfully weathered but structurally sound condition.