No problem, it is my pleasure realy
I found lots of other pictures today as well.
I was trown by the simplicity of the mortars.. the Bellefortis is more complex than this picture. It is a miniature though so taking that in mind this is a most appt depiction of a early 15th century mortar.
I am putting them up on Pinterest, but here are the links for your enjoyment
Best,
Marcus
http://gallicalabs.bnf.fr/ark:/12148...90370/f99.zoom
http://gallicalabs.bnf.fr/ark:/12148...0370/f113.zoom
https://www.pinterest.com/pin/551339179357923616/
http://manuscriptminiatures.com/3932/10782/
http://en.wikipedia.org/wiki/File:Ba..._Istanbul-.jpg