Does this shape appear in other series? No, not in other series, but a similar shape does reappear towards the end of the Early Series numbered Early Series 460. An example is also recorded incised Pamela 1934.
Two sizes are recorded.
Painted number 107-8-B. An unusual form of number, painted not incised.
The meaning of the 'B' suffix is unknown.
Un-numbered, stamped PPP.
Other un-numbered examples are either completely unmarked; or stamped "PREMIER POTTERIES, OAKOVER ROAD, PRESTON"; or stamped PPP as here.