For those interested, I have finally had the chance to photograph the matchlock I won at auction, lot #6 of the linked auction in the first post.
The barrel is about 95 cm (37-7/16 inches) and the overall length about 134.6 cm (53 inches). The weight (crudely measured by weighing myself on the scale with and without the musket!) is about 4.6 kg (10.2 lbs). The bore is 19 mm (.75 caliber/11 bore).
The lock is functional; the pan demonstrates an "X" with four dots next to the X in each quadrant. Crosses or X's are on the bottom of the pan. The pan cover swivels easily.
The stock retains its metal nosecap, as does the ramrod. The barrel is octagonal to round with parallel incised lines ahead of the heart-shaped rear sight.
A rim of sheet metal is nailed to the buttstock, which demonstrates a superficial crack/split on the left side.
Based on the visual comparison and the description of the split in the buttstock, I believe this matchlock was previously sold at auction by Bonhams in 2009:
https://www.bonhams.com/auctions/168...?category=list