41mm. In my description of a similar piece for the Michael Joffre Collection of Canadian Historical Medals, I wrote the following of the Leroux-300e, Betts-76 medal:

Betts-76 has long been collected as part of the Indian peace medal and Canadian series. However, numismatist David Fanning presents a strong argument that these medals were produced not for diplomatic purposes, but rather to celebrate the birth of Charles, Duc de Berry. They were likely struck circa 1691 to 1693 and served as the inspiration for the 1693 Dynastic medals, which were, in fact, given out to the Indigenous peoples of North America. 

Although not struck specifically for the North American colonies, this medal’s role as an inspiration for the first Indian peace medals explains their continued popularity. This is a flawless original survivor with flashy and reflective deep brown surfaces. There are even traces of mint redness around some of the legends. The die break on the reverse rim at 3 o’clock is diagnostic. Exceptional quality and eye appeal, and every bit as nice as the Joffre and Partrick representatives.