A handwritten musical manuscript by Wolfgang Amadeus Mozart is among the headline lots of a March 11 sale at RR Auction.

Bidding stands at $57,185.

The piece dates to around 1773 and shows the fifth movement of his Serenade in D Major.

Mozart was employed at Salzburg when he wrote his Serenade in D Major

The auction house comments: "He invokes the pompous effects of academic ceremonies infused with jubilation to drive the music, concluding with a marvelous finale ending in a gigue.

"It is an important symphonic movement in sonata form characteristic of Mozart's great works, weaving together brilliant modulations and refined phrases which he, as always, brings to a perfect resolution."

An autograph letter signed by Karl Marx is likely to prove another highlight, with bidding already at $44,799.

It dates to 1852 and is addressed to Heinrich Brockhaus, editor of the journal Die Gegenwart. Marx writes: "I hereby inquire whether you…are in need of an article concerning 'the modern national economical literature in England, 1830-1852'.

"To my knowledge, no similar work, not in German nor in English, has so far been published.

"It would include 1) general works on political economy, 2) specialized writings published at the time, insofar as they treat epochal controversies, such as population, the German colonies, banking issues, protective duties and free trade, etc…Another work, very topical at this moment, is 'The present state of the parties'—those which will face one another in the next parliament."

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