Vintage Coalport bone china flower bouquet in black square vase 4\" For Sale

Vintage Coalport bone china Made in England (later part of the Wedgewood group) bone china flower bouquet in a black square vase. This collectible features hand painted porcelain flowers arranged inside a sleek black square pot with 4 feet. 4\" by 4\" Stamped on the bottom of the vase is \"Coal port Made in England 1750 AD bone china\". I could not find any similar item in a black square vase.. I believe that the black square vase is rare.