4 US-Made Number / Type 77 #77 Vacuum Tubes Bell Plate Variety Lot Of Four

4 US-Made Number / Type 77 #77 Vacuum Tubes Bell Plate Variety Lot Of FourThese four US made belll plate number type 77 tubes were tested on our Paul Hart calibrated TV7 U for shorts, gas and emissions. There were no shorts or gas. They tested (from left to right) 36, 38, 42 and 42 where minimum (65%) is 31. 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

tall bottles

new in box GE 12BR7 tubes tested to spec on our Paul Hart-calibrated TV7/U

a clear top with red paint (indicating it is a selected

Through all of this

NON-US CUSTOMERS PLEASE BE ADVISED THAT THERE IS NO WAY FOR US TO SEND YOU A RETURN LABEL SHOULD THAT BE NECESSARY

5 record cleaner and then played it on my Rega Planar 3

A seven out of ten

Five are Sylvania and one is National Union

5 standard deviations of 3600 micromhos and tend to be rather erratic readings-wise like their 12AT7 cousins)

new in box RCA 36MC6 / 36MC6A tubes tested to spec on our Paul Hart-calibrated TV7/U

This General Electric GE 5 Star 6080 / 6AS7 dual triode output tube was tested on our Paul Hart-calibrated TV7/U for shorts

ZENITH-LABELED) measured 74/76 while Tube Two measured 76/78 where minimum (65%) is 50/50 and 100% is 77/77