antique hand-painted Nippon vase, tall urn w/ stormy sea & palm trees

Beautiful old unmarked Nippon vase, 12" tall. The paint finish has a slightly uneven texture - we're unsure if this is age related finish wear, or an intentional hand painted effect? We love the scene of palms against the dark green sea and stormy sky.

The rim and interior of the vase show some discolored crazing, but there are no chips or cracks to the china.