I think I posted Sealy's list from a year later (1970) when the number of varieties had reduced to fewer than 7? I'm always suspicious of that era's "blunt" vs "pointed", as they can be put down to wear, either of the examples found or the dies.
I'm not sure there is any kind of market for 1957 calm sea varieties, particularly when they are of such a micro nature. I'm happy to have a BU example and don't care which it is, frankly.