BOSTON, MASS.- A sought-after handwritten scientific working manuscript by Albert Einstein sold for $43,750, according to Boston-based RR Auction.

This exceptional piece of scientific history consists of one page, written on both sides and is undated. The manuscript showcases numerous scientific formulae meticulously penned by Einstein, accompanied by a handful of German words written in his own hand. Believed to be an integral part of his efforts to develop a Unified Field Theory, the manuscript is adorned with capital lambdas, lowercase mus, Gs, Rs, and various other characters.

What makes this manuscript truly remarkable is the scarcity of signed examples of Einstein's working scientific or mathematical notes. Typically dashed off quickly during his research, such papers would often be discarded or filed away. However, the presence of Einstein's signature, executed in a different, browner ink, strongly suggests that this manuscript was likely signed as a courteous gesture for its 'new' owner at a later date. The consignor notes that this particular example was presented to a family friend, adding to its historical significance and provenance.

Albert Einstein, renowned for his groundbreaking work in the field of theoretical physics, dedicated his scientific attention to developing a 'Unified Field Theory' beginning in the 1930s. This ambitious endeavor aimed to unite his general theory of relativity with electromagnetism. Regrettably, despite his lifelong dedication, Einstein was unable to achieve a satisfactory result in his pursuit of this elusive theory.

"The auction of this Albert Einstein signed scientific manuscript reaffirms the ever-growing interest in his groundbreaking work," said Bobby Livingston, Executive VP at RR Auction. "Collectors understand the significance of possessing tangible artifacts that provide a glimpse into his brilliant mind and the evolution of his scientific theories."

The auction also featured a range of other notable items, including:

• The Dr. Martin Breckstein Presidential Collection of 41 autographs from Washington to Clinton sold for an impressive $51,651.

• The Alexander II of Russia and Catherine Dolgorukova Autograph Letter Archive fetched $47,768.

• A Napoleon Document from 1812, signed amidst the disastrous Russian campaign, sold for $39,214.

• Abigail Adams signed letter discussing JQA, Jefferson, Sally Hemings, and England, which sold for $38,454.

• A John Hancock Autograph signed letter to his wife from the Continental Congress in 1777, which sold for $31,250.

• A John Adams signed letter expressing anticipation for news of the Constitution's ratification sold for $30,199.

• A comprehensive collection of autographs of French Marshals, including Napoleon Bonaparte, which sold for $27,495.

• George Washington signed letter outlining plans for an attack on Manhattan, which sold for $19,850.

The Fine Autograph and Artifacts auction, featuring Revolutionary War items, took place from June 23 to July 12.