I think mine is no. 1763 from '52/53. If it's a '54 it'll have the 75th anniversary decal. My July '58 boat strangely enough doesn't have the 1814, just a 4 digit serial number, and it's at the bow instead of at the stem. It also shows every sign that it was made by Chestnut. The earlier one has almost round thwarts and rounded off seats. The later one has flat thwarts and much sharper edged seats. The size/shape appears identical though.