This was one of the earliest tubes designed for use in consumer radios. In today's collector market, a working early Aeriotron WD-11 may easily sell for up to $130. Even if it doesn't operate, it's still a desirable collector's piece, and a $75 to $80 selling price is not unusual. The transistor first debuted in the early 1950s. Although they are more efficient than triodes, transistors are so cheap that few collectors bother with them.
The average price for an operating WD-5A is about $175. A non-operating example can be had for as little as $50. Transistors have become so inexpensive that collecting vintage ones now makes sense too. An WD-5 sold on eBay recently went for over $400!
Early aerials were made from wire and magnetic materials so they were large and expensive. Radios were small enough and affordable enough that many people began making their own sets; thus, the development of the tube radio was born. An aerial usually consists of two parts: a metal rod called a ferrule that holds the wires in place, and a set of magnets attached to the end of the rod.
Tubes require more electricity than solid-state devices but can output much more power. This means that they can send more signals over longer distances. Also, because there is no such thing as "off" when it comes to tubes, all channels of radios must be switched on when you want to listen to something.
As a collector of transistor radios, I believe it is essential to have at least one specimen of this historic radio in your collection. They may be obtained on eBay, with prices ranging from $300 to $1000 depending on the hue. The more basic ivory and grey cabinets will sell for less than the "mandarin" red and black cabinets. In general, these older models are not considered valuable by most collectors.
The parts themselves are worth only a few dollars each because they are so common. However, if you assemble one of these radios, you will probably find that some parts are hard to get because they are unique to a particular model. For example, the only way to repair or replace the high-voltage output tube in a GE type 925 cabinet is with an original part. So if you find one in good condition on eBay, it would be worth about $500.
In conclusion, old transistor radios are useful as a display piece or storage case but not much else. There are many other vintage electronic devices on eBay that are far more valuable.
It has grown in popularity among collectors in recent years and often sells for $300 to $500, depending on condition. Once in a while, though, one may be located on a shelf in an antique store for less than $200. Zenith's famous "Trans-Oceanic" portable shortwave radio. Zenith radios were sold all over the world. In fact, they are still made today under license in China!
The best time to sell anything on eBay or any other online marketplace is when you find a good price. If you wait until it's too late, you might not get any attention at all from potential buyers. Of course, if it doesn't sell then you've lost money anyway, so it's better to keep it and try again later.
In this case, you should start low and work your way up. Put it up for sale between $100 and $150 if you expect it to sell quickly. If it doesn't then drop the price down to $50 or even $10 if you want it to go. Some people will even pay more for an item that is in good condition. But only list it if you actually think you can get something like that back out of it.
Finally, remember that online marketplaces are just tools used by people to buy and sell products. They are not meant to replace face-to-face transactions with friends and neighbors. So don't be surprised if no one responds to your listing.