7 - pin Bakelite sockets
NOS ( New Old Stock )
These are 7 - pin Bakelite Bottom Chassis Mount tube
sockets. They were made in the 1950's, 60's and 70's.
These tube sockets are used for 6X4, 6AQ5, 6AU6, 6BA6,
12BA6, 12BE6 AND 9002
Tubes and many others.