Dana
Don't know much about muzzle dragons, but early English blunderbusses, maybe. This early blunderbuss is all I have been able to find so far. Earlier than this, one needs to look toward the Netherlands and Germany, I think.
The image is poor quality because the image in the book is poor quality. It is from the "The Blunderbuss 1500-1900" by James D. Forman
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