Peter:
I am hardly the Daytona expert, but I have started trying to learn something about these chronographs. Seems that the "plain" ones start in the $20K to $25K range (reference 6239; plain non-screw down pushers, with non-exotic dial) . . . the exotic / Newman / screw-down guys seems to pick up at around the $30K mark, and move up very quickly from there.
In terms of the racing provenance, I suppose the questions would be -- which driver? which team? which series? what event?
check the sock drawer first, desk drawer might be next . . . let's hope it ain't at the bottom of the tool box!!
have a super summer . . . will you be at Monterey this year? which marque will they honor?
Jeff