I included screenshots from Etsy and Past Perfect Online I found in researching this item.

This rare and unusual celebratory

Bronze medallion and souvenir coin celebrating the 250th anniversary of the 1701 founding of Detroit by the Frenchman Antoine De La Mothe Cadillac and his settlers - image of him meeting with tribal leaders - Reverse is an image of the "American Hotel Block" original home of the Eaton Chemical and Dyestuff company/ Theodore Horatio Eaton.

This piece is VERY RARE - it’s not even mentioned in his wiki resume.

Measures: Bronze is 3" diameter x 1/4"

thick - no wear or age of note to metalwork, light age to bronze finish.

Signed Rene P Chambellan.