Hello Folks, Headed to the RAGS Syracuse NY Hamfest this Saturday with a few items to sell. I have 4 Cetron 572B tubes, 3 are apparently NOS and one was used at some time. $250. cash and carry for the 4 of them. No Warranty. I am not willing to ship these. Two white boxes and two Cetron printed. Email me please. I am good on QRZ.