Marie CURIE Signed Certificate of Radium Analysis
Single leaf 'Certificat' from the Institut du Radium, at 1 Rue Pierre-Curie, Paris.
Dated October 2, 1923, this appears to be a definitive analysis of a mining sample which determines the amount of Radium and Radium Bromide.
Signed 'M. Curie' in violet ink.
Some foxing top RH corner, one spot mid RH margin, not overt. Old double fold lines. (310x206mm)


Estimate $2,000-3,000