Help with more info on coin?

[Mighty_Mouse]

i bought this thing at a flea market. was just wondering if anyone might have some info on it. Maybe a date and some back ground to it. Thanks HH

 

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[omnicognic]

grasping at straws here, but maybe a part of this set:http://www.24carat.co.uk/medallionsthegeniusofleonardodavinci.html