Just collected a couple of silver 1's from the local sorting office. All in all, nice coins. Happy to support a UK based seller.
As halo said above, the holo window is a bit on the large side. Even with the full key visible, it didnt need to be as big as it is.
Also holo itself may be slightly too big for the coin, as it partially covers some of the pressed design (or not quite big enough if it was meant to cover it all). Could just be a placement / centering thing. (or perhaps the standard 'series 1 error' ...
)
Look forward to seeing how the range develops. Good luck.