Is this yours?

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Nice if it was.Your point about the snaplock being less disturbing to aim is well made and presumably explains why it continued to be used on target guns. My point was that although the snapping matchlock develops quite early it was largely superseded by the more familiar lever action lock for the reasons I mentioned. Shooting competitions, arquebus or crossbow, seem to have been a feature of guilds which were effectively militia groups . One wonders if the dates had something to do with when an individual was admitted to a guild. By the way the Dutch name "zwamslot" freely translated means Mushroom/fungus Lock.One wonders whether the internals of the lock I posted were completely re made since all that was really required was to cut away the flashpan and fit a new serpentine.