The "orgins", if you mean who was the original owner, are probably lost forever with the parade of descendants of GE Mobile Radio. But, this was a big deal for the users and GE to participate in the Civil Defense matching grant program. The user got a radio for 50 cents on the dollar, albeit adorned with red white and blue stickers and a radio that met the 1963 FCC narrow banding mandate that even affected low band. That act, declared a large percentage of the public safety fleets junk. Many of which were surplus WW2 non-tactical radios.
The downside was the incessant auditing by the federal government. For years, they would require access to verify the radio was still in service. For a state agency, it meant days of travel and dedication of escort personnel almost every year. It got to the point, it wasn't worth the 50-50 match except for the very small users.
Today that grant lives on through the Aid to Fire Fighters (AFF) grant offered by FEMA. A qualified fire department can get a radio now for 10-20 cents on the dollar. Thank goodness the stickers and the incessant auditing are gone.