This is sooo cool! I get to be the first guy to use my new copy of AIA to help out! According to Mr. Postman Duckcreekforge is right. PW's before 1852 had "P.WRIGHT WARRENTED" on one side and the weight on the other. Typically if you were looking at the side with the horn pointing to your left you would see the weight. The waist will be thicker or "chunkier" as duckcreekforge put it, than later PW's. These PW's were made between 1830 and 1852. If it is a PW, it could be pushing nearly 200 years old!