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Here's a very scarce 1923 Adaunit portable radio manufactured in Grand Rapids, Michigan by the short-lived Auto Indicator Company. The radio comprises 1-tube "Pocket Radio" paired with a 2-stage All-American amplifier and a Morrison speaker driver on whose neck is mounted a tiny slip-on horn. Everything necessary for reception and amplification is housed in a leatherette-clad cabinet measuring just 13" x 9" x 8" when the lid is lowered. Also included is the radio's original instruction sheet, which explains how to tune the set and configure its internal batteries. 

Condition is very good throughout, and both AF transformers show proper resistance/continuity. The Pocket Radio's case appears to be made of poured shellac, but it could be bakelite -- hard to tell. It's in great shape, with no damage, and legible nomenclature everywhere. The radio's interior is clean and original throughout.

Both tipped 99 tubes in the amplifier have open filaments and are included for display purposes only. Likewise, the single dry cell tube in the radio has an open filament and will need to be replaced with a good tube if you wish to see if you can get the radio to work. The batteries in the radio appear to be original, but they're obviously dead and, like the tube, would need to replaced with a good battery if you wanted to take a stab at getting the radio to work.

For my part, I have not attempted to see if the radio works because I don't have the internal batteries required, and -- looking everything over -- it appears to be a challenging set to use with a regulated power supply. 

The instruction sheet is good condition, with normal browning, but no damage.

The Morrison driver shows very high resistance, and I don't get a click when I test it with a 6 volt battery. The driver was made in Detroit, and it's likely the cabinet was also made in Detroit, as it bears a strong resemblance to the leatherette-clad cabinets that were used to house Commerce Radiophones, which were manufactured in Detroit between 1919 and 1921.

The leather carrying handle is a replacement, but the cabinet is otherwise original, including the hardware and the leatherette covering.

Virtually nothing is known about this radio. My guess is that it was assembled with available parts from different manufacturers and -- in an attempt to find a viable outlet for the company's inventory of unsold Pocket Radios -- marketed in the last days of the Auto Indicator Company's existence. If you're skilled with early 20's sets and you're good at tinkering, you can probably get everything to work (both radio and 2-stage amp), but it's being offered for historical and/or collecting purposes only, with no other assurances stated or implied. 

I'm one of ebay's best known, most highly regarded sellers of antique radios, and I specialize in radios from the 1920's. I've been selling and shipping them for more than 25 years. When you purchase an antique radio from me, you'll receive a radio that arrives safely because it's been carefully packed (by me, not by some well-intentioned but nonetheless confounded, doe-eyed teenager working at the UPS store who wouldn't know a phonograph from a farm tool), Sure, you can probably get a lower price from Joe and Janet Barn-Find, but when your "bargain" arrives broken, and without any hint of how you might be able to put it back together, you'll realize that you really do get exactly what you pay for.