Description from Sylvania's datasheet on the 6CS7

The Construction of the 6CS7 tube

Base: E9-1, Small Button, 9-Pin
Outline: 6-3
Basing: 9EF
Cathode: Coated Unipotential
Heater warm-up time 11 seconds

Triode 1

Plate voltage: 250
grid voltage -8,5 volt
Plate curret 10,5 Ma
Transconductance 2200 mikroohm
Plate resistance 7750 mikroohm

Triode 2

Plate voltage: 250
grid voltage -10,5 volt
Plate curret 19 Ma
Transconductance 4500 mikroohm
PLate resistance 3450 mikroohm

Triode 1 connects to pins 6, 7 & 8
Triode 2 conntects to pins 1, 3 & 9

APLLICATIONS OF THE 6CS7 TUBE

"Sylvania 6CS7 & 8CS7 are miniature, double triodes having dissimilar sections. Section 1 is intended for operation as a vertical deflection oscillator and section 2 as a vertical deflection amplifier. The 6CS7 and 8CS7 incorporates controlled heater warm-up time to insuire dependable operation in television receives employing a series heater string."

Read more about 6CS7 tubes here

Also see Four Sylvaniva 6CS7 tubes - New Old Stock - matched quad