(A-36-2-180) (Do not pay Attention to above Details-can not get rid of it, due to ebay) Old Vintage "MUELLER BROTHERS" USA Folding Knife./.Rare and Lovely . Check the pics. From Estate. Sold As Is. Appr.: Blade 2 1/2" , 5 7/8" Open, 3 1/2" Closed.1.77 Oz. Weight. Marked (USA)..Can use some clean up Used.