425  (Early Series)   Posy half-ring.

Does this shape appear in other series?   Yes - Later Series 164 and 'A' Series / Kerryl A109

There were also earlier half-ring vases but of somewhat different form; see Early Series 60.

The full posy ring is Early Series 424

Diameter; 15 cm

Collection; 'W'
Collection; 'W'
Comparison; 425 (left) with Later Series 164.