I bought this Jambia in 1995 at a U. This gift I presume was from from the Peoples Democratic Republic Of Yemen as the South Yemen flag is on front of box.
The handmade Scabbard has been tested and is pure silver (414 grams without the wood inserts) with the Arab date 1279 that is western year 1863. But I was able to read the 1279 date. The dagger is more recent I think with a amber handle decorated with thin pure gold 24K (tested) disks. The blade is not sharp.
The item "1863 Silver Jambiya Scabbard Amber Gold Dagger US State Dept Gift South Yemen" is in sale since Thursday, December 01, 2016. This item is in the category "Collectibles\Knives, Swords & Blades\Daggers". The seller is "sj222" and is located in Cassopolis, Michigan. This item can be shipped worldwide.