MULLARD EL37 BIG BOTTLE MATCHED PAIR OF USED OLD STOCK IN BOX TESTS 100% STRONG VINTAGE VALVES TUBES

MADE IN THE MULLARD MITCHAM FACTORY GREAT BRITAIN IN AUGUST 1952

MULLARD MITCHAM FACTORY CODES ARE ETCHED INTO THE GLASS OF THE VALVES = 1282   C1

MULLARD BOXES

BLACK BASE WITH CLEAN PINS

THESE TUBES TEST AT 100% STRONG ON MY B&K 747 AND HICKOK TV-7 CALIBRATED TUBE TESTERS

TESTED EXCELLENT FOR GAS AND SHORTS

FREE TRACKED INTERNATIONAL WORLD WIDE AIRMAIL SHIPPING  (EXCEPT TO RUSSIA )

PLEASE SEE MY EXCELLENT E BAY CUSTOMER FEEDBACK AFTER OVER 15 YEARS OF SALES OF VINTAGE VALVES ON E BAY

PLEASE SEE MY EBAY 15 YEARS SALES AWARD IN THE PHOTOS