6 Zenith Type / Number 58 #58 Vacuum Tubes Valves Engraved Stamped Base Lot Of Six May 17 2025 These tubes have acid-etched codes

These tubes have acid-etched codes and designations as well as silk-screened 68-26 188-5 67-50 production run/provenance codes

These tubes have great bass and sparkling highs and Pete Ham's voice is warm and clear as a bell

It’s a good pressing of a 1954 performance from right on the cusp of mono high fi

new in box Amperex 6R3 / EY8 tubes tested to spec on our Paul Hart-calibrated TV7/U

6 Zenith Type / Number 58 #58 Vacuum Tubes Valves Engraved Stamped Base Lot Of Six May 17 2025 These tubes have acid-etched codesThis lot of six Zenith number type 58 stamped engraved base tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. They measured 40, 40, 46, 50, 50 and 55, respectively, where minimum (65%) is 36 and 100% is 56. 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