Excellent find! That's about as good as it gets in our state. Our European history is not as rich as that of coastal America. There are some that would argue that De Soto made it into Michigan. I personally don't believe so. Everywhere his exploration went the native populations were decimated by disease. The French on the other hand tended to live with and as the natives using our waterways to travel and explore vast amounts of North America. Building forts and trading centers in many states. During the French and Indian war there were some serious battles and at other times immediate surrender. They had control and influence from the Rocky mountains to the east coast of Canada. It was in fact Sacajaweas French husband that guided Lewis and Clark on the journey of discovery. But I get carried away. Your find is most likely from a French military officer. Can't do much better in Michigan age wise! Congratulations, this is a Midwestern bucketlister.