Help ID Tubes from 1954

[Charles Bacon]

Going through my old boxes I came across two tubes, in original sealed
boxes. Can't seem to find anything on these. Can anyone help me ID these?
Here's what's on one side of the boxes from top to bottom:

 

3H6691-59

Vibrator (24 VOLTS)

1 EACH

11661-PH-52

MOTOROLA INC. CHICAGO ILL.

DATE PKD 3/43 METHOD III

 

Chuck Bacon

BA and Vintage Test Gear Collector


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