German naturalist and explorer (1769-1859) who wrote Kosmos, a massive five-volume study which attempted to unify the various branches of man's knowledge. ALS in French, signed “Humboldt,” three pages on two adjoining sheets, 4 x 4.75, no date. Untranslated handwritten letter to "Monsieur Poisson" in Montmartre. In very good to fine condition, with light wrinkling, rusty paperclip impressions to the last page, and partial seal-related loss to one corner.
This item is Pre-Certified by PSA/DNA
Buy a third-party letter of authenticity for
$35.00
*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.
We use cookies on this site to improve your experience. By using this site, you accept our use of cookies. To learn more, please see our Privacy Policy.
