These are three variations on the same stovepipe hat, Lego already produce these, but it looks like v&a is looking to custom make some of these minifig hats for his steam punk style vignettes and minifigs, he’s planning to use Delrin plastic to machine them and is trying to find the best size, I reckon these would also be perfect for anyone interested in western /civil war minifigs, you could use them for Abe Lincoln, or even a circus ring master or clown, i think these will work well.
