This contract was being offered for sale by RR Auctions, as mentioned in the "Marx Brothers Council of Facebook". It has to do with the movies they made with Thelma Todd, MONKEY BUSINESS and HORSE FEATHERS.
Reblogged from https://www.facebook.com/groups/1389369721281242/1498075890410624/
DS, signed by all four brothers using their full legal signatures, three pages of a four page document, 8.5 x 11, April 6, 1962. Agreement between Groucho, Harpo, Zeppo, and Gummo and Paramount Pictures concerning the release of the estate of Chico Marx from a 1930 contract involving the Marx Brothers and re-releases of Monkey Business and Horse Feathers, as well as a cash payout of a total of $38,500.00 divided between the brothers, Chico’s two wives, and a law firm. Signed on the last two pages, “Julius H. (Groucho) Marx,” “Arthur Harpo Marx,” “Herbert Zeppo Marx,” “Mary DiVitha Marx,” “Betty Marx,” and “Gummo Marx.” Second page missing, mild toning, expected document wear, and uniform fading to typed text, otherwise fine condition. Horse Feathers, in which the brothers satirized the American College system and Prohibition, was one of their most popular films, and landed the brothers on the cover of Time magazine. Chico Marx, the oldest of the five, had passed away on October 11, 1961, last appearing with the Marx Brothers in the 1950 film Love Happy.
Brothers' Paramount contract (at least this two-picture one) was a participation deal. And I suspect this settlement had little to do with Paramount's original creative accounting, but rather was to legally clear the decks because the films were being (or had been) sold to MCA period.