*****SELLING WORLDWIDE***** PLATINUM MATCHED MATCHED PAIR TUBES (well-balanced triode-triode & tube-tube in transconductance and plate current).>>>> PAIR AMPEREX Made PHILIPS MINIWATT 12AX7 ECC83,Made in Heerlen factory,HOLLAND,STOCK PHOTO,73-88% PRINT VISIBLE.TUBES ARE SUPPLIED IN NEW MINIWATT BOX.THE LOGO/LABEL IS WELL TAKEN CARE OF.****TWICE TESTED; 1st)NO SHORTS,NO GAS AND VERY STRONG TRANSCONDUCTANCE. 2nd)TUBES ARE NOT USABLE UNLESS AUDIO TESTED WITH NO HUM and NON-MICROPHONIC USING MODIFIED DYNACO PAS 3 & TUBE OTL.*****Having a minimum of,TUBE1) 50/50 & 5.3/5.3 ma TUBE2) 50/50 & 5.3/5.3 ma Where 32/32 is minimum with Dan Nelson's newly calibrated MIL-SPECS TV7 tube tester. *****TUBES WITHOUT TEST DATA IS NOT SOUND DECISION & LISTING ADS THAT SAY'S "TEST GOOD" or "TEST STRONG" WITH HIDDEN TEST RESULTS IN VACUUM TUBES IS NOT ENOUGH AND AVOID SURPRISES. *****Whatever customs declared amount is what you get if item get lost.*****QUESTIONS ARE ALWAYS WELCOME.
NOS tubes fall within the Gm characteristic range of an average tube, as published in the RCA RECEIVING TUBE MANUAL, which states "Individual tubes, like any manufactured product, may have characteristics that range above or below the values given.