Vintage Royal China USA, porcelain Currier & Ives salt and pepper shakers

1.5 inches tall by 2.25 inches in diameter, round, porcelain salt and pepper shakers are white with blue transfer pattern of two men in a horse-drawn carriage in a park. Other pattern is fine, blue, parallel lines. The "S" for salt and "P" for pepper are victorian-looking letters. Top edge of shakers has birds, near bottom edge is pattern of curlicues. Good condition, no crazing, pepper shaker has original stopper, but it is partially melted and edges have broken off, both shakers have light brown stains, most are on the pepper shaker. (See all photos.)