Originally Posted by Janis

I e-mailed Singer when I couldn't get a certificate to print for the machine on mysingerstory.com and they wrote back that they
'do not have detailed historical data on the "EY" series serial numbers. We do know however, that model 221K was manufactured between 1968 and 1970.'

That's what I've found out and I also saw on another site that along with the white/green 221Ks they also made beige ones, and that is what color I have as I don't see any 'green' in mine and it isn't that white either. Mine was made in Great Britain.