Welcome to T-Net Jess! You should post your membership in the new members section so you can get a warm welcome to the forum. I do not recognize that mark offhand. Is it underneath the glaze? An actual picture of the vase itself would also be very helpful in trying to identify it.
This is the vase. It is about 18 inches in height. The markings are beneath the glaze. There is only one other marking that I can see beneath the lid. Pic to follow.