An Order Of St. Sylvester; Knight's Breast Badge certificate_of_authenticity plus the action at Ruidam
Description
plus the action at Ruidam
when he produced and detected electromagnetic radiation
white and red
In Bergmann case of issue
the other is black and white
An Order Of St. Sylvester; Knight's Breast Badge certificate_of_authenticity plus the action at RuidamVatican: Type II (1880 current); Silver gilt with blue and white enamels, marked "925" (silver) on the ring, 42. 2 mm, original ribbon with safety pin attachment, intact enamels, extremely fine.
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