Antique railroad cast steel link coupler from the 1830s to 1890s from the link - and - pin coupling system. This link coupler is 12.5 pounds, 13.25" long X 4.50" WIDE X 1.25" THICK IT HAS 2 DIFFERENT STAMPS ON EACH SIDE LOOKS LIKE UR & ZH OR 2H LINK COUPLER ONLY NO PIN. (I have been researching this link coupler for weeks now I have not found another one for sale )
