Shaun King Antiques has dated this piece to the 1900s.
It bears the IMPRESSED MARK 'WEMYSS WARE - R.H. & S' (Robert Heron & Son)on the base.

There are just two, old short hairlines on the top rim which are not open and are quite stable.
There is no restoration.
Dimensions:
Height: 7.5 inches (19 cm)
Diameter (not including the handles): 8.5 inches (21.5 cm)
Shaun King Antiques has dated this piece to the 1900s.
Third generation antiques dealer selling a wide range of large and small antiques pre 1920.
You can view the stock and full dealer information on the Shaun King Antiques Profile Page