Vintage W & M Wireless Crystal Radio, PO Reg 128 with BBC stamp. It is a molded bakelite base and sides. There is a small crack at the nut on one side which can be seen in the close up picture. It is 9 x 12 x 6 inches. It uses a perikon crystal detector. This is an Extremely Rare crystal radio from the. Therefore for the next year I will list many antique radios, audio tubes, Western Electric tubes and transformers, tube amplifiers, radio parts, and radio tubes, so bookmark my username stonevintageradio. For more information on radios, crystal sets, tubes, Western Electric tubes, as well as more radios or tubes for sale, visit my website StoneVintageRadio. This Agreement is governed by and interpreted under the laws of the state of Texas without exception. The item “Vintage W & M Wireless Crystal Radio, PO Reg 128 BBC stamp 1920s, Extremely Rare” is in sale since Thursday, November 12, 2020. This item is in the category “Collectibles\Radio, Phonograph, TV, Phone\Radios\Crystal Radios”. The seller is “stonevintageradio” and is located in Fort Worth, Texas. This item can be shipped worldwide.