RARE Antique Mermaid Flask Rockingham Glaze? Tan Brownish 1800s?

This auction is for one Antique Mermaid Ceramic Flask Rockingham Glaze Tan/Brown? Made in England 1800s? Condition is "Used". Has wear, soiling, scuffing from age, display and use. Right nipple is worn with finish loss. Reference photos for condition. Nice for its age and would be quality addition to any collection. Belonged to Grandfather and not sure of age; no maker's mark or country of origin. Color appears to me tan or brown. Antique Mermaid Ceramic Flask Rockingham Glaze Tan/Brown made in England 1800s? Approximate Measures: Length 4" inches x Height 7 1/2" inches x Width 3" inches. AS IS. AS PICTURED. NO RETURNS. Thank you for looking and please ask questions Shipped with USPS Priority Mail.