That's a lovely coin ! But is it the one I am after ? The reference to it I found was in the same area that made mention to the elephant, the castle, roses and plumes, plumes, WCC, SSC, Northumberland, Vigo, and Lima. So I thought there must be a British shilling of the time which had some special mark ?
It's called a scheepsjesschelling, ship shilling so to say, of the Dutch provinces. west-Frisia, Frisia, Geldria (Gelria), Holland, Zeeland, Overyssel, Groningen (Gron et ommel) etc.
Nordfljot Groningen-Friesland.
Referee for Dutch Republic, Netherlands and Frisia