My only resource for Damas Moire' is here, only partially translated from the original
https://docs.google.com/a/damascusknowle...67VsZgzJ9Q/edit Canon ruban moir et ruban anglais By manufacturing the lopin, to make the iron and steel barrel from which I come to speak, it arrived sometimes that the forgeur is misled, with the of place;
ce qui avait confondu toutes les mises ensemble. The canonnier, unaware of the error made, once the forged and
droch gun, is found amazed to see appearing a completely odd nuance, imitating the effet de moire. It is this the
Canon Moire' was called.
This kind of barrel, whose discovery is, as one sees it randomly, due, is very resistant; unfortunately it is too prone to present pailles, because of the number infinite of the weldings of which always some are imperfect. By joining together three or four pieces together and by always preserving the dish of the settings corresponding to the dish of the ribbons, one obtained a little later finer watered effects. It is with Celt variety of moire that one gave the name of English ruban.
Canon rubans fer toff This ribbon is to some extent that
a variety of watered effect. To do it, the pieces are composed as we will explain that one does it for the Damas mouchets, to say one joins together 100 iron alternees and of steel, square, alternated, that one welded and stretches directly in rubans like one does it for the watered effects, without making torsion and of the second welding as for the Damas.
I suspect it is a variant of "English Damascus Twist", Damas Anglais Coupe', Gebrochener Englischer Damast, or Combination Damascus; and both seem to be mid-1800s patterns.
H. Needler 12b percussion double.
More examples at the beginning here
http://www.picturetrail.com/sfx/album/view/19228742 
