The 1852 Quarter Dollar is a semi-scarce coin due to a low mintage of under 200,000 examples. The silver meltings that occured in 1853 and subsequent years added to the scarcity of this piece. Nonetheless, a small supply of Mint State examples exists, mostly in the MS63 and MS64 grades. MS65 and better examples are truly rare. The finest example is the NGC MS68* from the Eric Newman Collection, which sold in late 2013 for an astounding $107,750.
Eric P. Newman Numismatic Education Society - Heritage 11/2013:33368, $105,750 - Eugene H. Gardner Collection - Heritage 5/2015:98340, $99,875