Mullard Magic: For All Your Vintage Valve and Radio Needs!
STC, CRYSTAL 2005 KCS, BRASS BOUND, WIRELESS SET NO 7, WS7, DATED 1935
STC, CRYSTAL 3342 KCS, BRASS BOUND, WIRELESS SET NO 7, WS7, DATED 1935
STC, CRYSTAL, 4014 KCS, BRASS BOUND, WIRELESS SET NO 7, WS7, DATED 1935