As far as I know, CITIES won't issue a permit for an ivory item less than 100 years old. One could make that argument with this dagger but, as Rick stated above, working with that tone-deaf organization is exasperating at best. Selling within the US is definitely preferable since there's no risk of seizure. Incredible that something that's this old still has tree huggers up in arms.
On another note Bob, that's a superb dagger!
