A beautiful teapot though unusual for the period--some have speculated that the spout was a later replacement, but metal analysis suggests it is probably original. The coat of arms are a slightly later replacement, as faint traces of an earlier engraving can be seen. The extant arms likely belonged to a north Welsh family, possibly Edwards or Trevor.
Awesome! Yeah I hear you about the spout, I like the more typical short, curved type. But I also appreciate the iconoclasm of this one.