HERE IS A GREAT PAIR of MULLARD ECC83//12AX7 HI-FI AUDIO PRE-AMPLIFIER VACUUM TUBES.THEY ARE IN GOOD WORKING CONDITION WITH BRIGHT SHINY FLASHINGS.SINGLE TOP ANGLED GETTER.TALL SILVER GRID ROD SUPPORTS.SHORT RIBBED STAPLED PLATES.NO DATE/FACTORY ETCHINGS.BOTH ARE TESTED STRONG AND WILL PLAY WELL FOR YOU.THANKS FOR LOOKING,   JOEL