2 Zenith 6HA5 6HM5 Vacuum Tubes Valves NOS NIB Lot Of Two GM Delco I played it in one

I played it in one of my Radio Craftsmen RC-2 monoblocks and it sounds outstanding even though it tests on the cusp

One is a 1P21 while the other could not be identified

66 and 68 where minimum (65%) is 45

Transconductance measured 57 for Tube One and 58 for Tube Two where minimum (65%) is 40

35 and 47 where minimum (65%) is 25

2 Zenith 6HA5 6HM5 Vacuum Tubes Valves NOS NIB Lot Of Two GM Delco I played it in oneThese two new old stock, new in box Zenith 6HA5 6HM5 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