9 RCA 6CK3 6CL3 Vacuum Tubes NOS NIB Lot Of Nine

9 RCA 6CK3 6CL3 Vacuum Tubes NOS NIB Lot Of NineThese nine new old stock, new in box RCA 6CK3 6CL3 tubes tested to spec on our Paul Hart calibrated TV7 U. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE ALSO SEE OUT ETSY SISTER SITE "LOWTECHTWOO" AND OR CALL OR TEXT US AT 202 372 6931 IF YOU DO NOT SEE WHAT YOU NEED OR HAVE ANY QUESTIONS. 1. MOST FORMS OF SHIPPING EXCEPT MEDIA MAIL ARE AUTOMATICALLY INSURED UP TO $100. ETSY PURCHASE PROTECTION COVERS ITEMS UP

new in box GE 12X4 tube -- and three others just like it -- tested to spec on our Paul Hart-calibrated TV7/U

new in box 12F5GT tubes tested to spec on our Paul Hart-calibrated TV7/U

ITEMS ARE GUARANTEED AS-DESCRIBED ON SHIPMENT

Mica Spacers

34 and 35 where minimum (65%) is 25

rounded plates and excellent flashing

This matched pair of RCA-Victor dark-gray glass 6K6GT tubes was tested on our Maxi-Matcher tube tester with 325 volts on the plates and a bias of -36 volts

new in box RCA 6U10 tube tested to spec on our Paul Hart-calibrated TV7/U

These nine National Union number / type 27 tubes tested as good on our Paul Hart-calibrated TV7/U

shorts and gas

Tube One measured 95%/93% and 95%/94% for Tube Two

Transconductance readings are 26