I really focus on flintlocks but I do occasionally get other interesting pieces, usually with other items I am more interested in. The bottom is a continental (Italian?) snaphaunce, ca 1700. The middle seems to me earlier. With that style engraving, I would date it to mid-1600s. I hope you don't mind, but I take the liberty to add a flintlock lock which I have not found a similar example to date it. It has a lot of the snaphaunce influence so I believe it to be second or third quarter 17th century. I found the original cock on eBay France (dug up on a Napoleonic Wars site, obviously not related) which I believe to be stylistically similar to the lock and ca 1660s or 70s. I think it is interesting how one percussion conversion retains the horizontal sear while the other has been updated. I should have double-checked but I do not recall if Alessandro Ghini is in Der Neue Stockel or not.