My mother has a singer sewing machine s.s au52-16-5 cat.bz10-8 siman co. who know how much these singer are worth in slow but working condition with the patented dates at the base as follows aug 10-1915,July 13-1915,jan 19-1915,jun 14-1910,feb 21-1899 with flower,4leaf clovers,leaves , shells on the base and also on the base I believe the serial or model # is g4163183 if anybody has any info on how much this machine is worth and anybody who is interested in this machine. Email me at [email protected] or call me at (770) 709-1618 in Georgia anytime day or night thanks donald