Hi, I've come across a 1914-18 commemorative medal that is much thicker than I've seen before. I'm not a collector of them particularly, so maybe it's fairly common, but of the four I've seen, this is the thickest. I was wondering whether anyone could tell me whether this is unusual. In particular, I'd like to know whether it's a different type common to a particular manufacturer, or perhaps even a fake. It's 3 mm deep, compared to the 'normal' one I have, which is just 2 mm deep. Consequently, the thicker one is much heavier than the other. Otherwise, they appear to be the same. I have a subsidiary question as well. I read in various places that the 6 month bars are silver and the 30 month bar is silver gilt. Being pedantic about these things, I would be interested to know whether they are actually silver, silver plated or a silver coloured metal. Many thanks on my first posting.