175  (Early Series)    TWO SHAPES
: This is one of  the numbers that were assigned to two different shapes during the course of the Early Series years.

Shape book 'C'

175  (Early Series)    Small vase with ribbed bulbous base and straight throat

Does this shape appear in other series?  Not exactly, but Later Series 32 is similar and Early Series 244 is somewhat similar too. 
There is a jug version of this vase,  Early Series 174.
The shape-book sketch below shows a twig-handle but no example is recorded to date with a handle.

Height;  10 cm

Shape book 'C'

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Lynne Cumming
Shape book 'E'

175  (Early Series)    Slender vase with flaring wavy mouth
There is no example recorded in the image database. It is known only from the shape book. The shape is not known in any other series.
Height; from the shape book, about 17.5 cm.
Objective Vintage Design,
Fyshwick ACT