I recently picked up an unusual set of Ruger Mark II laminated Target grips with thumb-rest. These came in a package marked "Target Sports Custom Pistol Parts;" the label indicates they are "RUGBLACK MKII BLACK LAMINATE TGT CHECKERED WOOD GRIP W/FR GRIPW RUG." The style and manufacture seem to be identical to early Mark II laminated thumb-rest grips (as found on early manufacture Mark II Competition Target Models) with the exception of using a combination of black and tan/brown layers in the laminate, and having no factory medallion in the right-hand grip. I installed these on a KMK512GC. I've never seen this exact grip before. Any info someone might have about these grips would be greatly appreciated.