Ceramic bead insulators x 109; Crown Lynn Technical Ceramics Limited; 1940-1970; 2009.1.2009
Ceramic bead insulators x 109; Crown Lynn Technical Ceramics Limited; 1940-1970; 2009.1.2009
Ceramic bead insulators x 109; Crown Lynn Technical Ceramics Limited; 1940-1970; 2009.1.2009