this lovely pot looks like black basalt ware overlaid with pewter. Obviously this piece has suffered what can be described as severe trauma to its pouring handle. Personally I love this item, it has oriental charm and quality....plus rarity value.
The mark is believed to be the Province of the imperial revenues, Idsoumi. If any one knows different or has any further information I would really like to know more about this my email is firstname.lastname@example.org
thanks in advance...please gaze and enjoy.