

Benjamin valve base
circa 1920s
Lissen valve base
circa 1920s-1930s
Ediswan valve base
circa 1900s
Valve base
Valve base
Valve base
Lotus valve base
Telsen valve base
circa 1920s-1930s
Ferranti valve base
circa 1900s
circa 1920s
circa 1920s-1930s
circa 1900s
circa 1920s-1930s
circa 1900s