52  (Early Series; PPP)   Small flask, bulbous body, with one spiral handle.

Does this shape appear in other series?    No. Decorative spirals like this are almost entirely confined to the PPP range. For more examples click here.

Early Series / PPP 76 is similar but with a longer neck.
A shape book lists 52 as being the "same as Early Series / PPP 30 only  with 1 handle"
There are also similar un-numbered PPP pieces in this and other sizes. 

Height; 9.5 cm

Collection; Jeremy Zarifopoulos
Bases stamped PPP, incised 52
Un-numbered, stamped PPP

52 (?) (Early Series)   Small bulbous pot with collar lip.

Does this shape appear in other series?    Yes -  Later Series 44
Early Series 67 is also similar.
Only a single example is recorded marked 52, which raises the possibility that the number might be a mistake and should be 44 or 67. (Mistakes did happen - see the Pitfalls page.)

Height; 7.5 cm

Robert CV
Shape book 'PPP'

52  (Early Series)    TWO SHAPES
: This is one of those Early Series numbers that was assigned twice, first to a PPP flask, and then some time after PPP was discontinued in 1934, to a Remued pot.