I have the sister! Love the machine and so glad someone on this board got that one. I check the KS area and saw that one - a super great deal too!
Technically, its a 28K as it was made in the Scotland.
Mine is from 1895, and I have a set of attachments with the Great Briton logo. Your serial number is from 1909
BTW - the decal pattern is called Tiffany.
