I have a BNIB Umnumzaan factory fresh with the new L.B.S. and all recent upgrades. This one has a birthdate of Dec. 15, 2011. Unlike my first one purchased 6 months ago, this one is super smooth, easily opens with one-hand and in the flip-mode position as well (pivot facing downward and using middle finger to open knife ending it open position with blade pointing downward). Looking to trade for an Umnumzaan without the new L.B.S. in excellent condition. Condition has to be excellent to brand new since this one is brand new. Any interest....shoot me a pm or post reply here. Thanks for looking 