Examples of the type

Picture 1 of the example of 50 Pence - Elizabeth II (Viking longship on map; Platinum) Picture 1 of the example of 50 Pence - Elizabeth II (Viking longship on map; Platinum)
© NGC
1978 PM – Proof
Picture 1 of the example of 50 Pence - Elizabeth II (Viking longship on map; Platinum) Picture 1 of the example of 50 Pence - Elizabeth II (Viking longship on map; Platinum)
© NGC
1979 PM – Proof; stylized triskelion privy mark