1G3GTA / 1G3GT / 1B3GT Lot of Three (3) and similar items

Here are three (3) new old stock, new in box Sylvania and Tung-Sol 1G3GTA / 1G3GT / 1B3GT tubes for your equipment. Two newer Sylvania's have same code of EBY stenciled on glass; one has a broken guide pin but guide still visible for correct insertion. The 1G3GT tube is Tung-Sol-branded. Shipping is via U.S. Postal Service Ground Advantage with tracking for domestic sales; Priority Mail is an option for you as well. International sales ship via International Shipping service. Package weighs ten (10) ounces. Combined shipping always welcome. TUBES ARE GUARANTEED GOOD AND IN WORKING ORDER AT SHIPMENT. TRANSIT VIA POST CAN DAMAGE TUBES. THIS IS NO FAULT OF OURS BUT THE THIRD PARTY ENTITY THAT IS DELIVERING ITEM(S) TO YOU, I.E, USPS, UPS, FEDEX, YOUR NATIONAL CARRIER IF INTERNATIONAL, ETC. PLEASE INSURE THEM! WE CANNOT GUARANTEE FAILURES ON YOUR EQUIPMENT AFTER POWER UP AS THERE IS NO WAY TO ASCERTAIN HOW TUBES WILL INTERACT WITH YOUR ELECTRONICS; NOR IS THERE A WAY TO DETERMINE WHETHER THEY MAY HAVE FATAL FLAWS IN TUBES THEMSELVES! THESE ARE USED VACUUM TUBES AND TIME MAY HAVE TAKEN A TOLL ON THEM OVER THE MANY YEARS SINCE THEY WERE MANUFACTURED. WE CAN ONLY TEST FOR THE PARAMETERS MENTIONED ABOVE IN ONE OR MORE OF THE FOLLOWING EQUIPMENT WE USE FOR MEASURING: TV-7/U, JACKSON 648 MAXI MATCHER 2.