Stash Puzzle - Clam/Shell Motif and a Token Heart

I've been printing the Stash Puzzles with PLA and ABS. ABS requires a sidewalk to avoid curling the two corners. In this case, I've gone ahead and included a functional sidewalk option.

This is more or less a coastal motif. I've provided an optional Token to put into the puzzles.

Careful! Printing these is highly addicting!
All 3 puzzle are interchangeable. See thing https://www.thingiverse.com/thing:3045262