4 US-Made Number / Type 41 #41 Vacuum Tubes Gray Bottle Lot Of Four November 11 2025 new in box RCA 6MU8

new in box RCA 6MU8 tube tested to spec on our Paul Hart-calibrated TV7/U

Net Total $221

new in box Sylvania 19BG6G tubes tested to spec on our Paul Hart-calibrated TV7/U

new in box quad of US-made 6G6G tubes tested to spec on our Paul Hart-calibrated TV7/U

Transconductance: 2490 micromhos Transconductance: 2670 micromhos

4 US-Made Number / Type 41 #41 Vacuum Tubes Gray Bottle Lot Of Four November 11 2025 new in box RCA 6MU8These four US made, gray bottle type number 41 tubes tested as follows on our Paul Hart calibrated TV7 U: 43, 46, 55 and 59 where minimum (65%) is 40 and 100% is 62. 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