Zambia, 4000 Kwacha (Prince William's 21st Birthday) 2003 Silver Proof
This is a coin that we have never seen, and as such may well be Rare. A silver proof crown to celebrate Prince William’s 21st birthday in 2003, nothing unusual there, but… the denomination is 4000 Kwacha, it was issued by Zambia and H.M. the Queen is on the obverse. Well to make it even stranger Prince William is riding a jet ski. It is from our famous hoard of unknown crowns, this one is certainly ‘unusual’ to say the least. Proof Sterling Silver and it comes in a capsule. William is most likely to be a future King, which makes this crown even more interesting.