Hello, Thought I would be using these but I have not. All are unused, NOS bought directly from USSR supplier. Qty. 4 of GS-35B complete with large copper radiator,@ 110.00 each Qty. 3 of GU-74B { 4CX800A} @ 75.00 each Qty. 6 of socket for GU-74B, SK-1A @ 40.00 each Thank you, Byron WA5THJ.