7  (Early Series)    Small jug with cylindrical base and bulbous top

Does this shape appear in other series?  No -  (none in image database).
This is the jug version of the Early Series 49 vase.

Height; 9.5 - 11.5 cm

7  (Early Series)     TWO SHAPES
The second shape may be a re-allocation of a number that became disused after production of the first had ceased, or it may be part of a separate small 'Animal' numbering series.

7  (Early Series)    Vase with flaring base and animal decoration

Does this shape appear in other series?  No - (none recorded in image database)
Two sizes are recorded, the smaller suffixed either 's' or with inch suffix '6'; the larger either 'L' or inch suffix '9'. 

It is not clear whether this number 7 represents a re-allocation of an Early Series number that had become disused, or is part of a separate little 'Animal' numbering series. It is one of a series of animal-decorated shapes that all feature a wide flaring foot and become narrower upwards.
See Early Series 4  ; 5  ; 9 ; 13
Modelling of animals attributed to John Castle-Harris

7/6z   Skink lizard decoration.

No base image. The incised number was reported as '7/62' but is presumably '7/6Z'
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Height; 22 - 25 cm
7/LB   Koala decoration.
Collection; Gisele Hendy

Collection; Brian Tonkin
7/9z   Skink lizard decoration.
Hurnall's Antiques & Decorative Arts
Young's Auctions

Hurnall's Antiques & Decorative Arts
     Incised 7/6z

     Westport Auction, Connecticut USA.
Un-numbered example, base incised Remued.
Un-numbered   Koala decoration
Hurnall's Antiques & Decorative Arts
7sB (front) and 7LB
Height; 15 - 17 cm
7 sB   Koala decoration.
7/9k   Kookaburra decoration.
The only other recorded example is numbered, strangely, 36z - possibly a mistake.
                    Brearly collection
A variant of Early Series 7? - or another distinct shape?
Un-numbered, unsigned. Height 12 cm.
Clear affinities including the square handle.