There are a few 52x9 chips listed here

http://www2.okisemi.com/us/docs/PrdDisplayDocs.html

http://www2.okisemi.com/us/docs/DisplayTables-10.html

suggested by both

http://www.bgs.nu/sdw/

and

http://www.embeddedlinks.com/chipdir/c/o.htm

Maybe you can make something of a near miss

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