Seeking dating information Suhl Hen mark

[Bayowolf]

It is on a bayonet. Very unusual in style and having the remains of a spring catch that looks similar to the much later Khyl spring catch. No guessing game was intended. I was hoping to get some dating information from the dated and marked firearms. The conventional wisdom is that the socket bayonet was invented in France in the 1670s. This example may push that date back a bit earlier.

The other side of the blade is marked with a large stag.