Tero: Antique Electronic Supply 6221 South Maple Avenue Tempe, Arizona 85283 Phone: (602) 820-5411 has 4-pin ceramic sockets for $3.50 each, # P-STR-194. They have ceramic bayonet sockets for $7.25 each, #P-ST4-312. That first part should be P-ST4-194. At those prices I'd consider soldering to the tube pins! Sure you can find better prices, but haven't looked. Ed Phillips