Chinese Polychrome Enamel 'Mandarin Ducks and Lotus' Ovoid Vase

This is an elaborately decorated ceramic vase, likely made of porcelain or a fine earthenware, featuring a vibrant polychrome (multiple colors) enamel decoration on a dark, possibly emerald green or deep teal, ground. The vase has an ovoid or globular body shape, tapering towards the visible base. The decoration depicts a naturalistic scene with prominent features including vibrant Mandarin ducks, pink lotus flowers, green lotus pads, and various leafy aquatic plants and foliage, possibly reeds or bamboo. The color palette is rich and diverse, including shades of pink, green, orange, yellow, light blue/lavender, and white. The details on the ducks, such as their feathers, show intricate brushwork. Near the base, a band of green, serrated leaves or stylized foliage encircles the vase. The craftsmanship appears to be of good quality, with clear outlines and well-filled areas of color. The base of the vase shows an unglazed foot rim, characteristic of many ceramic vessels. On the unglazed foot, there is a prominent red, square-shaped maker's mark or reign mark, typical of Chinese ceramics. The mark appears to be a four-character mark, likely in traditional Chinese script, indicating a dynasty, ruler, or studio. The overall condition appears good from the visible angles, with no obvious major chips or cracks. There is some minor dirt or patina on the unglazed base, consistent with age and use. The style suggests it is an antique or vintage piece, likely Chinese, dating from the late 19th to mid-20th century, possibly during the Republic period or Qing Dynasty (Guangxu to Xuantong era). The intricate hand-painted details indicate a degree of artistic skill and care in its production.