Patent number stamped on the back, no DJ mark. A 1970s Gibson ABR-1 wired, chrome-plated bridge. The saddles have likely been replaced. The chrome plating on the bridge body has little peeling, and the condition is not bad considering its age. The posts are slightly bent. As this is a vintage item, please check the condition in the photos carefully and purchase only if you are satisfied. #Gibson #LesPaul #lespaul #Gibsonsg #firebird #flyingv #GuitarParts #GuitarRepair