NOS 1950s SYLVANIA RCA USA 12AU7A ECC82 LONG-PLATE MUSEUM CERTIFIED SINGLE TUBE
12AU7A = E82CC = ECC802S. REAL NOS 1950's SYLVANIA-RCA 12AU7A TUBE. 12AU7A O-GETTER LONG-PLATE TUBE. serving as a desirable ECC82 = 12AU7 tube; representing the best of its kind. THE "PERFECT 1950's SYLVANIA RCA 12AU7/ECC82".