THIS SALE IS FOR 2 NEW OLD STOCK RAYTHEON CK5751 BLACK PLATE TRIPLE MICA RADIO VACUUM TUBES. THEY WERE TESTED ON MY TV-7B/U TUBE TESTER WITH STRONG READINGS OF 50/50 AND 50/48. THE MINIMUM GOOD READING IS 32. SEE MY OTHER AUCTIONS FOR MORE VINTAGE VACUUM TUBES. I COMBINE SHIPMENTS TO REDUCE SHIPPING COSTS. ON BUY IT NOW ITEMS, EBAY REQUIRES THAT THE BUYER PAYS FOR SHIPPING AT THE TIME OF PURCHASE. ON MULTIPLE PURCHASES WHERE YOU PAY FOR THE SHIPPING UPFRONT, I WILL COMBINE THE ITEMS IN...TO ONE PACKAGE, DETERMINE THE COMBINED SHIPPING COST, AND REFUND THE BUYER'S PAYPAL ACCOUNT FOR ANY OVERPAYMENT. ANTIQUE ELECTRONICS OF THIS TYPE CANNOT BE GUARANTEED FOR EXTENDED PERIODS OF TIME. ANY RETURNS MUST BE MADE WITHIN 14 DAYS OF RECEIPT.ALL RETURN SHIPPING COSTS ARE THE RESPONSIBILITY OF THE BUYER. RETURNED ITEMS MUST HAVE MY ORIGINAL TEST RESULT NUMBERS ON THE TUBES.