DS, in French, signed “M. Curie,” one page, 8.5 x 12.5, Institut Du Radium letterhead, June 15, 1923. Curie measures the “Dosage of Mesothorium by Gamma Ray,” contained within a specific piece of laboratory apparatus, and certifies her finding that “the [radio] active material contained in this apparatus is mesothorium, also perhaps within a certain quantity of radium.” Certificate also details the apparatus tested and method used. In fine condition. Any item directly pertaining to Curie’s experiments in radiation are quite desirable. Pre-certified John Reznikoff/PSA/DNA and RR Auction COA.
This item is Pre-Certified by PSA/DNA
Buy a third-party letter of authenticity for
$75.00
*This item has been pre-certified by a trusted third-party authentication service, and by placing a bid on this item, you agree to accept the opinion of this authentication service. If you wish to have an opinion rendered by a different authenticator of your choosing, you must do so prior to your placing of any bid. RR Auction is not responsible for differing opinions submitted 30 days after the date of the sale.
