What? Who? When?

Try as I might I can find no information on this piece of pavement art. I can however tell you it's on High Street near the Olde Black Boy. The four whales are a reference to Hull's whaling past after that I'm at a loss. Clearly the the three crowns and a bird have some meaning but what I don't know. Personally I think it's a fairly ghastly item that has quite rightly been ignored by history.