same thread right ?
http://www.quiltingboard.com/vintage...e-t260234.html
post a photo of it and how you found that it's a 1957.
I'm hoping to date an other one. Just take the pink motor apart, clean, lube reinstall it
you can search on here or google for details. I take it have never done that so your time doing it might be as long as 2 hours.. I'm sure there's u tube vids also