Found some cast iron hoppers at "odds and sods" in bolsover,prices start at £10.He says they would make nice planters,I think they would make better hoppers!.
Interesting Me! The "oversize" heads I reckon would have been used to catch the discharge from the valley between two dormer windows. The other heads described as a pair are in fact different in that one is smaller than the other, has a different pattern (although still with a grape and vine theme) and is from a corner location. They are both very decorative though and maybe Arts and Crafts influenced?
I'd like a few minutes with them to copy the patterns...