The following list of auction sales records for Koren warrant the conclusion that presale estimates in the range of $800-1,200 are both reasonable and justifiable.

Title/Subject: Hieroglyphs, signed. Mixed media on canvas. 46 5/8 in. x 23 1/4 in. Sold for $1,836 on 3/13/2012 at Christie’s, Amsterdam.

Title/Subject: Untitled, signed, executed 1962. Mixed media on canvas. 63 in. x 39 3/8 in. Sold for $4,984 on 3/13/2012 at Christie’s, Amsterdam.

Title/Subject: Untitled, signed. Mixed media on canvas. 31 ½ in. x 31 1/2 in. Sold for $2,118 on 9/20/2011 at Christie’s, Amsterdam.

Title/Subject: Hieroglyphs, signed. Mixed media on canvas. 63 in. x 39 3/8 in. Sold for $2,646 on 2/26/2008 at Christie’s, Amsterdam.

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Title/Subject: Untitled, executed 1965. Mixed media on canvas. 27 1/2 in. x 23 5/8 in. Sold for $3,294 on 5/26/1993 at Christie’s, Amsterdam.