Guernsey 1997 5 pounds silver? [solved]

Hi. I've bought this first day cover. It contains a Guernsey 1997 5 Pound coin.

?

The coin is like: https://en.numista.com/catalogue/pieces23238.html

The coin is sealed in the first day cover. However, to the eye it looks like CuNi not silver (I didn't buy it on the basis that it was silver). Is there a CuNi version of this coin?

This one?

Kind Regards,
Phil

Yes that one thank you. For some reason it didn't appear in the search that I did which only came up with the silver version but I've just searched again and both appear! Thanks

No problem, glad to have helped

Phil