This teapot in my sister-in-laws collection is an interesting shape. I really like the allover textured relief pattern and the fancy knob on the lid.
I don’t know the history of this teapot, but it is probably circa l970.
This is Masons made in England ironstone in pattern C4856. Because of its exceptional durability, ironstone is great for everyday use tableware.
It says “guaranteed permanent acid resisting color” on the bottom, instead of dishwasher safe as it would today. Household automatic dishwashers didn’t really catch on until the 1950’s, although the first practical machine was invented in 1886 by Josephine Cochrane.
I’ve seen other pieces in this pattern on eBay and it seems to be quite popular with collectors. You can find some of the history of Mason’s Ironstone here.