VIETNAM WAR EMERSON RADIO US ARMY SIGNAL CORP MINE METAL DETECTOR AN/PRS-4. Serial #3443, Emerson Radio and Phonograph Co DA-44-009 ENG-326. Corp of Engineers. With 1953 battery which looks like it is no good. Dirty from loose, main cord cracked to wire in spots I believe from age. It appears to be complete to my untrained eye, untested, sold in find in need of at least a batteyr and center cord. There are empty battyer holders in the case, some the unit may still have batteries inside in unknown condition. It also has 2 mine probes and a rubber kneeling pad. The exterior case has wear and soiling with some markings painted over which read 40th Ord Det. It measures 30.5" x 14.25" x 10.25". A nice estate find.