Here is an item similar to your Karl Marx Das Kapital 1st first edition that we, at Nate D. Sanders Auctions,  just sold in 2016 for $66,435:

Thomas Jefferson Scarce Signed 1st Edition of the First U.S. Census — One of Only a Handful Signed & Ratified by Jefferson

Extremely rare Thomas Jefferson signed first edition of the first U.S. census, one of only a handful of Jefferson signed copies sold at auction in the last 40 years. As Secretary of State, Jefferson called for the first official census, and ratified the results of only a handful, this being one of them, signed boldly ”Th: Jefferson” on page 56. Published in Philadelphia: Childs and Swaine, 1791. Full title reads, ”Return of the Whole Number of Persons Within the Several Districts of the United States, According to ‘An Act Providing for the Enumeration of the Inhabitants of the Unites States’. Printed in a small number for distribution by Thomas Jefferson as Secretary of State, and from his direct descendant, Thomas Jefferson Coolidge Jr., with Mr. Coolidge’s crested label to front pastedown. Bound in 19th century half-morocco and marbled boards, book measures 5” x 7.25”. This copy appears to be one of the very first printings of the first edition, as it lacks the tipped-in late-returning results from South Carolina often found on page 54. The lower margins of pages 34, 42 and 43 have been shaved by binder, otherwise copy is near fine with a touch of toning and foxing.

Volume also includes a press copy of an autograph letter signed by Jefferson, affixed to rear endpaper, dated 8 October 1797, measuring 6.5” x 7.75”. Letter concerns a quarterly dividend of ”a few dollars over 300”, payable to Col. James Monroe. A rare opportunity for the very first census of the United States, signed by its 3rd President, with other such copies selling for approx. $100,000. With provenance from Christie’s 21 June 2013 sale, lot 147, where this copy sold for $62,500.  We sold it for $66,435.