Please Help Identify Large Pottery Tankard

Can anyone help identify who made this large chunky tankard,, it has incised decoration all around, it measures 6 inches high, the name on the but either reads Gini or giDi ???

Nice decoration. Slab built. If it’s British then the method of signing and construction point to it being by a hobby potter, but it’s possible it’s from abroad, eg, the US or Australian, where this style is more common.