Why not make the new £1 coin Euro compatible? Despite Brexit and all, it would make so much sense to share the same dimensions for the pound and the Euro.<p>Old pound: diameter 22.5 mm, thickness 3.15 mm.<p>New pound: diameter 22.63 - 23.43mm [1], thickness 2.8 mm.<p>Euro: diameter 23.25 mm, thickness 2.33 mm.<p>So close and yet so different! Why??!?<p>Edit: Okay, I'm not sure why I saw "so much sense" in having the pound and the Euro the same size. I go to the UK often and hate having different coin sizes in my pockets, but obviously the pound and the Euro aren't the same value, so there's no real reason they should be of the same size...<p>[1] Since the new pound isn't round but dodecagonal, the diameter isn't constant; the smallest value is the diameter of the incircle and the other value, the diameter of the circumcircle.