Today I received a silver pound coin in my change on a bus.
the colour difference between it and other pound coins I had in my hand drew my attention to it.
It appears to be a "Royal arms Silver pound coin 2015." but not one of the double thickness limited addition collector pieces from
The Royal Mint site although it looks the same design etc.
I first thought this coin was fake but now I think its legal tender, is it a rare coin or what?
does anyone have any info for me on this as I cannot find anything about it online.
Many thanks for any help in advance

