IIRC, the winged Double-Duty Surgilator was introduced in 1978 on the LFA series 18-pound capacity models, and continued until end of the belt-drive era. It was never used on standard-capacity belt drives or on any direct-drives.
This may be an LHA series, which is 1980-1981, based on the timer background being light-colored. The next series change went to a dark-colored background. See Imperial Thread # 20294 for an LHA-7800 (1981) washer paired with an LE7800XK (1982) dryer. Unless it's a photo artifact, lightening the picture reveals the console apparently is wood-grained with a silver area around the water level control and temperature pushbuttons. The LHA series largely had a dark console except around the timer. Possibly there were some promotional and select-vendor models styled differently.
As always, the model and serial numbers tell the story on age.