German hackbut barrel

[Matchlock]

Originally Posted by Marcus den toom

it was the sale on 30november in 2011 (london).

I thought that rectangular "hooks" on these barrels where made earlier?

This wall hook should actually not be called 'rectangular'; it's rather rounded, basically very much like the one on that Czerny's barrel, and figured as a sea monster.
As I have tried to state several times, the earliest - and actually rectangular - wall hooks on barrels seem to have appeared in ca. 1430; they evolved a certain degree of staging after ca. 1450, and after ca. 1510-15 they seem to have taken on rounded (Renaissance-type) shapes.
Wall hooks had normally disappeared by ca. 1600 but are found as late as the second half of the 18th c. (!!!) on special types of wallgun barrels.

Best,
Michael