WWII U.S. Navy Radar Test Equipment OBU-3 – Echo Box Assembly – Bureau of Ships • Presidential & official service

• Presidential & official service certificates

minor fabric degradation

The helmet features its original white painted steel shell with the Civil Defense “CD” triangle emblem on the front marked “WARDEN

Includes original Notice of Declassification document

Historical Association:

WWII U.S. Navy Radar Test Equipment OBU-3 – Echo Box Assembly – Bureau of Ships • Presidential & official serviceOffered here is an original World War II U. S. Navy radar test equipment unit designated OBU 3, complete with attached Echo Box assembly (CABV 14ABA 1). Manufactured for the Navy Department Bureau of Ships by Johnson Service Company (Milwaukee, WI), this unit was used in radar calibration and testing applications during WWII. Details: Model: OBU 3 Radar Test Equipment Component: CABV 14ABA 1 Echo Box Assembly Manufacturer: Johnson Service Company