Roman Frister was born in 1928.

Roman Frister was a Jewish Survivor of the holocaust where he was forced to watch his parents die by the horrid Nazis.

Take a look at the following web page you should find what you need there,
http://www.sewalot.com/frister_rossmann.htm

Needlebar.com has a chart showing serial numbers against years.

Serial numbers between 1,500,001 and 1,619,904 for Frister and Rossman were made from 1915 to 1920. I'm guessing in the latter part of that period by your serial number.