7 Sylvania 3CB6 Vacuum Tubes Valves NOS NIB Lot Of Seven 6GH8 T28 They have 2-30 188-5 and

They have 2-30 188-5 and 3-52 188-5 date/provenance codes

This Sylvania-MANUFACTURED

I have played them in my Radio Craftsmen RC-2 monoblocks and they are dead quiet when the CD player is paused and have excellent frequency response

Enhanced Cooling: yes

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

7 Sylvania 3CB6 Vacuum Tubes Valves NOS NIB Lot Of Seven 6GH8 T28 They have 2-30 188-5 andThese seven Sylvania made 3CB6 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 UP TO $250 IN VALUE.