Armstrong DP1

Region: North America
[[ Insulator ]]
Type: Telegraph/Telephone
Material: Glass
Style code: CD-155
Maximum Power: Unknown
Manufacturer: Armstrong
Production Start: 1938
Production End: 1969
Rarity: Less Common
Specific Object
Date Made: 1949
Specific Object Condition: Excellent

The Armstrong DP1 is Armstrong’s version of a CD-155 insulator. CD-155 replaced the widely used CD-154 insulators, like the [[ Hemingray 42 ]].

It reads on the front:

Armstrong’s DP1

On the back:

MADE IN U.S.A. (circle with A) 39 49