Though a much later lock, there are a couple with the same basic plate shap that could be modified to reflect the same characteristics of this very early lock.
Mantons and Bailles locks, depending on the size that you want, have the same basic lock plate shapes and again, could be modified to reflect this era. But, it would be some extreme modifications.
You might check with Caywood, as they have some French locks that are earlier and might be more easily modified to fit.
Hope this helps.