Hi Michael,
Thank you for this comparison

. I was thinking about this possibility as well, but the line beneath the half circle is going askew to the left
I also believe that the schloss Dyck lock is more recent than the Burgunon one. The hammer does have the same duck beak shape, but the burgunon one is more massive in the "head" section of the hammer, also the base is not rounded and larger than the schloss Dyck one
As far as i can tell from the books i got, the hammer slowly evolved to the swan neck? The schloss Dyck lock seems to be further down this line than the burgunon one?
Sadly, there is no forum member called Flintlock... seeing as Michael provided a very good overview of the matchlocks (matchlock chronicle).