Hi, patcole!
If you know that it's an 1890 White sewing machine, I'm wondering how you could know the year without knowing the serial number, please?
You might also want to check out the information that you will find via clicking on the following link.
http://www.askmehelpdesk.com/collect...ne-179783.html
To find the serial number, one of the places might be underneath and on the machine itself.
Thanks!