There are 3 good charts from Butin; It can be seen that the charts are somewhat confusing since some Omani sword weapons are mixed with the wrong chart and the author calls one chart ARABIE...and another MAROC....but the displayed weapons argue with that nomenclature...ie they are bit mixed up . Having said that it is easy to unscramble and Butin takes his place at the top of the Ethnographic weapons specialty where he is greatly admired.
There is a separate chart(Diverse Oriental Armes) for what are almost odd men out including Sri Lankan and Yatagan styles and also in the same chart are those Ivory Hilts of Oman and Zanzibar with gold round and leaf shaped decorations. Another key appears however, in the shape of the Omani Scabbard with round sworls crafted into the leather
Regarding the astute observation by Stu earlier ; It can be seen that the Moroccan form does indeed have a more upright facing pommel and the Zanzibar form more points downward.
Members have noted privately that the Zanzibar type has a ring guard whereas the Moroccan does not... This is not the case; Some Zanzibar Nimcha do have the ring guard but there are those that have none whereas I have never seen a ring guard on Moroccan Nimchas.
As a connected thread see http://www.vikingsword.com/vb/showt...+zanzibar+yemen
which makes the position clearer.