I know the 1808 is from France and I had the 1811 identified as France too, but looking at them next to each other I don't think it is. The 1811 is smaller and seems to be a different denomination, but I can't make it out. I don't know much about this era. Can someone tell me where the 1811 is from?
Probably a 10 Centesimi from the Kingdom of Napoleon in Italy. They look similar to the French ones. Edit: Both the 10 Centimes (1808) and 10 Centesimi (1811) are listed as 18 mm, 2 grams, 20% silver, 80% copper. So I'm not sure why they would have different diameters, unless maybe they are slightly different thicknesses.
Yes, the "M" under the 1811 date is for the Milano mint. And in Italian is written Napoleone Emperor and King
