I was amazed to note that the coin weights and actual silver weights for coins from many countries were incorrect in this catalog. I have no idea what happened, but it needs to be fixed. In some cases, they appear to have truncated the coin weight in grams and calculated the silver weight based on the incorrect coin weight. In other cases, it looks like simply wrong information. As an example, KM-309, 311 and 318 all had actual silver weights of .0289 oz in the 2009 edition and now they are .0289, .0289 and .0278. On the nezt page, the weights of KM-310, 312 and 319 were all .0736 in 2009 and they are now .0736, .0718 and .0766. You may not care about the Netherlands East Indies, but check out Canada where there are also multiple errors. I haven't looked the gold coins, but I wonder if errors might also exist there.