Here are your four (4) new old stock, new in box GE 25W6GT tubes for your equipment needs. All tubes have black plates and D getters. Tube One: GE with codes 3-26 188-5, black glass, black plate and bottom D getter Tube Two: GE with codes 3-26 188-5, black glass, black plate and bottom D getter Tube Three: GE with codes 3-04 188-5, black glass, black plate and bottom D getter Tube Four: GE with codes 58-13 188-5, clear glass, silver top, black plate and top D getter Tubes ships via United States Postal Service (USPS) Ground Advantage with tracking for domestic U.S. sale; Priority Mail is an option if you wish your package delivered quicker. International orders ship via International Shipping service. Package weighs fifteen (15) 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: HICKOK 600A, HICKOK 800, MAXI MATCHER MAXI MATCHER 2.