I use many of the familiar sites for my world and ancient research (Doug's, NGC, Vcoins, FORVM) but I am wondering if there is a site that has size as a search criteria. Like I can search for all 38.1mm coins and so forth. Any input appreciated.
Forvm has a big bronze section under collecting themes, but yeah, that would be nice to add to searches.
CT probably resizes it for the forum, may have to click on image to see actual size. I don't have one of the Yap coins yet, but I would have one in my front yard if I could find one legally.
With ancients, size is not a really good characteristic to key upon. Weight is better but has problems, too. Since coins were hammered without a restraining collar, it is quite possible for one coin to be a couple mm wider than the one struck immediately before or after just because it was hit harder. Books record, for example, AE18 but specimens might be found 17mm as well as oval 18x20mm. Weight was often controlled using a system where a certain number of coins from a quantity of metal with not great regard for individual weights. They made 72 coins from a pound of metal and coins will average 1/72 pound but some will be lighter and others heavier. Some authorities were very consistent when it comes to coin size and weight while others were just plain sloppy so it is hard to key on these characteristics. Thickness was not a standard thing so we are faced with the question as to which of two coins is 'larger' - the wider or the heavier.