細節
A Systme Abel Berrens four-valve receiver,
with valves and loading coil on ebonite top, black front panel with controls and walnut case -- 25in. (64cm.) wide, circa 1925, with two spare coils
with valves and loading coil on ebonite top, black front panel with controls and walnut case -- 25in. (64cm.) wide, circa 1925, with two spare coils