I just purchased a Singer "15ch Models - 1 and 11". The cabinet and machine are in very good condition, but needs a new belt and thread spindle to start. I haven't had a chance to check out much more. Does anyone know how old this machine is? I have checked out a lot of stuff on internet and it appears to be in the group between 1850 and 1870. Nothing gives an approximate value, but I felt that $80.00 was reasonable. I found it in a thrift shop. My first find.