A rare Royal Doulton Art Deco vase from the Mandarin Ware series, attributed to principal designer Robert Allen, circa 1920. Finely hand-painted with bold polychrome florals on a vibrant yellow ground and finished with the characteristic black-glazed rim, this vase exemplifies the quality and artistry that made Mandarin Ware internationally celebrated and highly collectible. The bright yellow ground places this example within the highly collectible ''Imperial Chinese Yellow'' line of Royal Doulton Mandarin Ware. Marked to the base with the Royal Doulton green factory stamp and an impressed model number. While unsigned, the design, color, and glaze are strongly associated with Allen’s signature style. A registration number (RN) further confirms its authenticity as part of the protected Mandarin Ware line. This example is of exceptional rarity and true museum quality—Mandarin Ware vases with a yellow g...