.The item shown in the image is a vintage porcelain lidded tea mug featuring a hand-painted "Eternal Devotion" design with mandarin ducks and pink lotus flowers, produced by Artfield & Craftsmen. While the company name includes "Japan" on some import/export stamps, these specific decorative porcelain wares from Artfield were famously hand-decorated in Macau and China during the late 20th century.

Design Elements

Mandarin Ducks: A traditional Asian motif symbolizing lifelong marital fidelity, love, and "eternal devotion" due to the birds pairing for life.

Lotus Flowers: Featured prominently across the body and matching lid, representing purity and longevity.

Multi-Piece Set: This style of Asian tea mug typically includes the main mug, a matching porcelain lid to keep the tea hot, and sometimes a removable internal ceramic strainer/infuser basket for loose-leaf brewing.