I will appreciate some help here. If the owners of the above mentioned commemorative issue (100'th anniversary of the ministry of finance) can take a look and let me know if the edge is plain or vertically reeded? I bought the coin recently with the plain edge and was puzzled since I could not recall another plain edge silver issue by Thai mint. The weight - 24.9 gr by my weight - seems to match declared, diameter is 38 mm and the edge seems manufactured, not filed off. Krause omits this information in both printed and on-line editions.