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This is a Rembrandt Harmensz Van Rijn  (Dutch, 1606 - 1669)The Polish Rider, c. 1655. Cavaliere Polacco, oil on canvasOverall: 45 1/2 x 52 3/8 in. Henry Clay Frick Bequest, The Frick Collection, New York. El Jinate Poland. #6041 I found a website that makes reproductions and it says my size costs $650. So I am trying to find out what my Rembrandt painting is valued at and if I sell it what should I expect to get for it. $650 or would I get more if its real? Thanks Also the other paintings / pictures I am unsure of who /what they are and would like to know what value they are and what to sell them for. And last one is a poster of "Heraldic Scroll and Map of Family Names and Origins of Ireland". Wondering if its worth much, probably not since its just a poster.  Thanks for any information / value on any of these. Â