Extremely Rare Worcester Convolvulus Pattern High Chelsea Ewer c1775

Description

Heading : Worcester High Chelsea Ewer
Date : c1775
Period : George III
Marks : Open Crescent
Origin : Worcester. England
Colour : Hand painted underglaze cobalt blue
Pattern : Convolvulus (I.E.38) 
Features : High form cream jug with loop handle
Size : 9cm tall  12.1cm long including the handle
Condition : Good. no cracks. chip to the rim to the left of the handle
Restoration : None
Weight : 125 grams

This pattern is listed as being rare. however we cannot find another example of a high chelsea ewer with the same pattern. other than the waster found when the factory site was excavated. This complete ewer is possibly unique