Elongated Coin (Shell Factory, Fort Myers, FL.)

Can't find anything online about this as of yet. I will keep looking, though. Nothing on the particular design I have. I don't even know where I got this.

The coin was a bit tarnished when it was stamped, though. That shows through on the final stamp. Unsure if I can remove it without damaging the integrity of the design.

Link to where the coin likely was stamped: Click Here (my best guess, the name matches and designs are similar.)