The lock, barrel, trigger guard and side plate are original and 17th century IMO. I think the butt cap may possibly be of the time of the later, working restocking but thats just based on the differences i see in the pictures from the other aforementioned hardware. See Keith Neal's GBG book (the big, early one, 1500s to 1740s) for a similar barrel on a 1670s English pistol. Definitely a re-stock with that carving and lock panel work. There appears to have been some peckering around with the name engraving, possibly by the same hands that attempted the repair work? Again, just what I see from the photos.