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MWHal Chase died in 1947 so authentic examples of his autograph are pretty difficult to locate.  I would say that index cards would start at about $1000 and signed photos at $5000 or more (I know of only one).  I have not seen any examples of signed checks so I do not know what they would be priced at.  Below I have included examples of an authentic signed photograph (from Silagi collection, PSA/DNA certified) and a signature from a letter -- both dated from 1942.
