You are bidding on a pair of Gibson electric guitar bridges that I'm told is from the late 60s/early 70s.  I am an acoustic guitar repair tech who acquired this part in the purchase of parts from a closed music store, the info dating it to the 60s/70s comes from a source more knowledgeable than I am about electric guitars and parts, I cannot confirm that date/time period.   Bridge #1 is nickel or chrome plated (looks more like chrome to my eye) and is marked on the under side "Gibson Pat. No. 2,740,313" which should help date it for those in the know.  Bridge #2 is gold plated and is marked "ABR-1" on the underside, I understand this bridge was used on the Les Paul Custom.  The bridges are missing saddles, screws and springs/wires.  The plating is in very good condition on both bridges, and both bridges are flat/level (no collapse).  Be sure to ask all questions before bidding and make sure you want it before you buy.  Shipping to US only, no international shipping offered.  Shipping will be by priority mail w/insurance and will be $15.  Thanks for your interest.