I have an a white rotary electric sewing machine - the only thing I have is the book 'book no.12' does that tell you anything I need to know what year it is - thanks

White Sewing Machine Manual Instruction and Repair Manuals (http://www.sewusa.com/Sewing_Machine_Manuals/White_Sewing_Machines.htm)

Welcome to White Sewing (http://www.whitesewing.com/history.asp)

There is a site for serial numbers to year, back in a minute.

whites (http://www.treadleon.net/whitesm/whites.html)
I have to go, do you have the number?