This is a shallow circular porcelain dish with a wide rim and short footring, designed for stability when placed on altars or tables. The construction is finely potted with a clean, symmetrical profile typical of late Qing production for export.
The top surface features a dense underglaze blue design of thirteen Shou characters, with one central roundel and twelve radiating arms in stylised archaic script. The cobalt pools in the incised decoration, creating a dark blue contrast against the pale glaze. The back is plain apart from a double circle enclosing a four-character Jin Tang Zhi mark in kaishu script.
This form and decoration are closely associated with longevity symbolism and ritual presentation. The piece likely functioned as part of a set for auspicious display in Thai-Chinese households or temples during the late 19th century.