Antique Niloak Mission Swirl Vase 1st Mark 1910-24 8 & 1/4”-1/2” Tall

No chips or cracks, but has small area with residue & what looks like maybe graphite marks from a pencil. This Vase Features a top of all one consistent swirl & lots of blue throughout the piece. Also a double unique design that looks like a few different things…. Like a longhorn dipping it’s head for a drink of water & the ripples forming around the area. Or a duck or boat on the water & the ripples that would form. Offers welcome. Thank Tou!