A telephone amplifier fitted with a single earpiece and a folding stand. A volume dial is mounted at the top of the amplifier which is accompanied by its original box. " POCKETABLE / TELEPHONE AMPLIFIER / NEW COM " is marked on the front of the amplifier. " JAPAN " is marked on the reverse. " POCKETABLE / TELEPHONE / AMPLIFIER " and " MODEL HP-500 / JAPAN " is marked in near illegible gold lettering on the box.
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