Generally, I only assess one item per question here, however since you were not aware I will make an exception.
On today's market, an original Oris Dahlen (1918 - 2003) painting would carry an estimate of $300 - $500 at auction. The suggested insurance or replacement value is $1500.
Gordon Snidow is offering his A/P copy of the print by the same name for $1000. Here is a link for you, and also to the artist's own personal site.
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