This Boker model is the 140145DAM Leopard Damascus (Leo-Damascus) Letter Opener. This letter opener, 4mm thick, is made entirely of Damascus steel featuring a 4-inch tanto blade, decorative file work on the back side, and a unique handle style which allows a secure grip. The Boker Leo-Damascus Letter Opener has an overall length of 6.625-inches, comes with a premium leather sleeve pouch and was handmade in Solingen, Germany. Serial numbered; BNIB.
From Boker: The high performance Leopard Damascus steel is forged from the barrel of the battle tank Leopard I, exclusively for Boker. This extremely hard material is hand forged with tool steels and ball bearing steels to form 300 layers, which, through a special etching procedure, are intricately defined in this Damascus pattern. The dynamic recurved tanto style blade and the decorative file work on the back side mark the high standard of this extraordinary letter opener. Manufactured completely by hand at the Boker knife manufactory in Solingen, Germany.