The inside is engraved with "0.250 750 LUCIE". Size: 7.5 Worn about 2-3 times. No certificate of authenticity. Notes: This is a very high-value transaction. Please review the photos carefully. Returns, exchanges, and cancellations are not accepted after purchase. We will not accept any returns, exchanges, claims, or lawsuits after purchase, under any circumstances. Please be aware of this.