Super MATCHED QUAD of early 1960s RCA 6L6GC black plate, coppper pipe single side getters. Strong and current matched in the old RCA boxes. All original, lightly used, from early HiFi equipment estate. Just throughly tested in multiple testers and played with music. Working well; quiet and matched, detailed and sounding great! Guaranteed no DOA. The nicest early matched QUAD you will see online for a long while...so they will sell quickly. The plates are incrediblely close in Current (iP & transconductance .... they are all very close production .. dating from the early 1960's (see tags). Cosmetics are also near mint, one tube has a tiny mark from clamp many years ago (you can't even see under bright inspection lamp. Strong and quiet, no gas or shorts, no microphonics at all. Please read the reports in photos below, for date codes and test results.  These are really cool and have original 50 year old RCA boxes included! (some wear and age, as they are very old boxes). They are the early ones ... 6 hole black plate , copper pipe, single side getter version of the 6L6GC -  the real McCoy!  Study the included tube test results in photos. If you're currently a user of modern tubes then these will make a world of difference in your sound — a real upgrade and a treat for your ears -- clean, clear and more overall detail you can really hear. Probably one of the best & most throughly checked and CLOSELY matching QUAD sets of the early 6L6GC anywhere online… they will sell quickly. And nearly perfectly matched ip & mhos -- you don't see that very often.     Buy Now to avoid a bidder’s war. Fast shipping, and always safe double box packing !! See feedback, 100% happy customers.