We have always considered and collected these commercial masks and helmets as industries tribal art. Examples can be elegant in their simplicity or bazaar and complex. They are always unique, suprising and filled with personality.
Long Wave Loading Unit Type IP 503
Wireless Specialty Apparatus Co. Long Wave Loading Unit Type IP 503 – A rare and elegant piece of early wireless history, the Type IP 503 Long Wave Loading Unit was designed around 1919 for use with the IP 500 and IP 501 shipboard receivers. Housed in a beautifully crafted hardwood cabinet with a bakelite panel, this unit features large, precision vernier dials, wavelength selector switch (Low/Medium/High), and robust toggle switches labeled “Lock” and “Release.” When mounted atop a receiver and connected via short jumpers, the IP 503 extended the receiver’s range up to a remarkable 19,000 meters—ideal for tuning to commercial and naval longwave stations of the period. Completely passive, this unit required no power source and serves as both a functional component and an outstanding display item for any early radio collection. ... $800
