Electrodelta / Cessna Aircraft 28V / 50A Voltage Regulator. P/N VR300-28-50. Alternate P/Ns: G250EN, DGR7-28-50. Delco Remy: 1119656, Cessna P/N: 0850460-9. Beech P/N: 35-380142-15. It was removed from a salvage aircraft.