6 RCA 13J10 13Z10 Vacuum Tubes NOS NIB Lot Of Six 12SW7 T08

6 RCA 13J10 13Z10 Vacuum Tubes NOS NIB Lot Of Six 12SW7 T08These six new old stock, new in box RCA 13J10 13Z10 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

54 and 65 where minimum (65%) is 48

They tested (from left to right) as follows: 56 and 59 where minimum (65%) is 40

This matched pair of Cunningham / RCA 6F5s were tested on our Paul Hart-calibrated TV7/U for shorts

25 out of ten

This lot of five new old stock

new in box RCA 6GY5s tubes tested to spec on our Paul Hart-calibrated TV7/U

32 and 52 where minimum (65%) is 36 and 100% is 55

These four US-made 6SF7 tubes were tested on our Paul Hart-calibrated TV7/U for shorts

They measured 101/82

This CD plays fine

It is suitable for 211

they can put out as much as 2A3s and fell into disfavor because of socket supply issues