Sylvania 5BC3 Vacuum Tube NOS NIB Wristwatch engraved base number 78 tubes

engraved base number 78 tubes were tested on our Paul Hart-calibrated TV7/U for shorts

This new-looking Baird Atomic GS10C/S CV2325 Dekatron counting tube looks new

a goal post getter

I have played them in my Sound Craftsmen RC-2 monoblock amplifiers with adapters (not included) and they sounded outstanding

but I don't have any equipment that uses these

Sylvania 5BC3 Vacuum Tube NOS NIB Wristwatch engraved base number 78 tubesThis new old stock, new in box Sylvania 5BC3 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 UP TO $250 IN