Two Shamshir / Killij / Scimitar for comment

[Mel H]

One with horn grips and a reasonably heavily curved 78 cm un-fullered blade having a slightly broadened, double edged tip (27 cm).

The other, has Ivory grips and a very wide cross guard (18.5 cm) and a less curved, 84 cm pipe back blade,

Neither have any markings, stamps or engravings.
Knowing that some 19th C. European Officers favoured the Mameluke style, I did at one time wonder if the Horn one may be of European origin.

Any advice with regard to their origins ( and correct terminology) would be welcomed.