Many Zenith transistor radio parts are available for sale for the Royal 500 series radios. All parts have been removed from working radios. Each part has been checked to insure it is in working order. For transistor orders, the domestic shipping is a flat rate of $2.95, up to three transistors. For other parts, shipping will be actual charges depending on the customer's shipping choice.

I do not have any battery boxes, speakers, or volume controls for the Royal 275, 500, 500D, 280, and 285 series radios. I do have a limited number of speakers for the Royal 500E series radio. Also, I have no spare parts for any of the transistorized Royal Transoceanic radios. These parts are available only from a "parts donor" chassis. Over the years, reasonably priced parts radios have vanished.

Please contact me by email for your specific part needs. The Zenith part numbers are very  helpful.