Panerai Navy Seals Experience 1 Challenge Coin. Coin is approximately 2 inches in diameter. At the end of the experience the participants were awarded a coin. If you are a Panerai Seal Team watch owner or Panerai collector this is a great opportunity to obtain a very unique coin. Coin is laser engraved on the side: Panerai Navy Seals Xperience 1. Coin has a small scratch in the enamel on the back side (evident as you can see a small bit of brass exposed); otherwise its a very nice and extremely rare coin. General Information & Frequently Asked Questions – Please read before you message me. I sell high quality, desirable, collectible challenge coins. If you are looking for a specific coin for your collection, as a “memento” from a previous unit, to replace a coin that was lost, or for a gift, there is a good chance I may have it so please check my other listings! For any questions not covered above.