CATHODE RAY OSCILLOSCOPE TUBES.

RCA 913 1" Cathode Ray Tube for oscilloscope applications.
Selling price in 1948 $14.00
circa 1940

913 Specifications (click to enlarge)

Mullard DH3-91
British version of 1CP1
Has Loctal tube base.

I have additional of these if anyone needs one.  $25 postpaid.

1DP1
Has 3/4" diameter screen
 

Magnavox 1EP1 1" Cathode Ray Tube for oscilloscope applications.

circa 1950

SC3016-P7
1" CRT. Characteristics unknown

5039-F52
1" CRT Characteristics Unknown
Came out of a Heads Up Display unit that contained only tube and mirror.
No way for it to have deflection yoke yet no visible deflection plates.

MARANTZ CRT (minature cathode ray tube ) for Marantz models 18 , 19 and 20

manufactured by Telefunken

Telefunken Part # D 3-11 GJ

Marantz part #337-1000

Marantz Cathode Ray Tube

Toshiba (85DB1/7J3)

Used in several high end collectors models like model 120b and 150

Marantz Minature cathode ray tube for model 120

Manufactured by Toshiba E2610B1

M01JP65WB Matsushita 16mm CRT
Could this be the "World's Smallest CRT"?
Shown compated to a penny

NO, actually I've found three even smaller in my quest to find the smallest.

RCA 902 2" Cathode Ray Tube for oscilloscope applications.
Selling price in 1948 $9.75
circa 1940

RCA 2AP1 2" Cathode Ray Tube for oscilloscope applications.
Selling price in 1948 $9.50
circa 1945

RCA 2BP1 2" Cathode Ray Tube for oscilloscope applications.
Selling price in 1948 $8.75
 

Fairchild KC2634P31 2" Cathode Ray Tube for oscilloscope applications.

3" tubes