Henry Watson's Potteries Ltd. - Wattisfield Ware

Wattisfield Ware slipware jug





I've found a few pieces of Wattisfield pottery, all slipware. Haven't found much about the pottery aside from the following:

Wattisfield Ware, Henry Watson Potteries, Suffolk.
The Watsons started potting in Wattisfield in the late 1800s.
The impressed mark WATTISFIELD WARE SFK HANDMADE IN ENGLAND was used from 1948.

A little bit about the old pottery can be found at https://www.henrywatson.com/UK/our-story.html

Wattisfield salt pig

Could you please help me to id this red earthenware jug with impressed marks.
Height 9.5cm

The pottery continues to this day but below is images of an advertising leaflet from, I imagine, the 1960s.