Antique ironstone Invalid Jelly pot

An antique white ironstone confectioner’s pot for Invalid Jelly, decorated with a lovely black under glaze advertising transfer for Parker & Sons.
Specially prepared from calves feet by
Parker & Sons
Invalid Jelly
Confectioner’s by appointment 
18 St Marys Gate
And 
12 St Anns Square
Manchester
An interesting and increasingly scarce Victorian/Edwardian pot.
Dimensions:
8cm diameter
7.9cm tall
Condition:
There is a small scrape/bruise on the rim, but this is on the back side so does not show when on display. Otherwise in nice clean condition, with some glaze crazing and light age related wear marks.