Page from Karl Marx's manuscript sold for $523,000

It includes extracts and analyses Marx made on British banker James William Gilbart's book "Practical Treatise on Banking," which he referenced when writing his piece "Capital: Critique of Political Economy."

The manuscript is one of the 1,250 pages of notes Marx made in London from September 1850 to August 1853, based on which he wrote the first draft of "Capital". The notes are considered valuable materials to study the development of Marx's thoughts on economics.

The sale comes on the 200th anniversary this year of Marx's birth.