If anyone is interested, I have the following FS, all NIB: 1) 2-6939's made by GE, $12.50 each 2) 2-5842/417A's made by GE, $6.00 each 3) 2-5842/417A's made by Naitonal, $6.00 each All came from spare tube stock at a TV transmitter site. Add shipping (probably Priority mail) to all prices. Thanks, Jack, AE7DX