EF86, MULLARD, SOLID CHROME SCREEN, YELOW PRINT, FACTORY CODE, 9r3 B4F2, BLACKBURN, JUNE 1964 MANUFACTURE

EF86, MULLARD, SOLID CHROME SCREEN, YELOW PRINT, FACTORY CODE, 9r3 B4F2, BLACKBURN, JUNE  1964 MANUFACTURE

On offer today one of these striking devices. with a solid screen around the anode plate and rigid internal support.