General Electric GE 21JS6 21JS6A 23JS6 23JS6GA Vacuum Tube Valve NOS NIB New York Times I have played them in

I have played them in my Radio Craftsmen RC-2 monoblocks with adapters (not included) and they sound outstanding

There were no shorts and the final three tubes on the right might be a bit gassy

Tube Two probably has a piece of broken glass in it

If you want the Total Package

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General Electric GE 21JS6 21JS6A 23JS6 23JS6GA Vacuum Tube Valve NOS NIB New York Times I have played them inThis new old stock, new in box GE 21JS6A 23JS6GA 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