Emmy, so nice to read all that you had to say. I am missing the bobbin case on my Butterfly, so I have not been able to try to sew with it. I don't remember whether I checked to see if the Model 15 bobbin case would fit - if so I will see if I can get it to work. Thank you so much for posting those links! When I purchased my Butterfly I looked all over the web and could not find much information at all. I only found some pictures of more modern Butterfly machines.
We visited Scotland in May of last year! It is a beautiful country. We spent a week in Edinborough and another week in Fort William, as well as a couple of other nights in Aberdeen and Dunfermline. We would love to go again.
Please do post a picture of your Butterfly when you finish your move. There are many people on the board who will be happy to help you get it sewing. But watch out - we might make a quilter out of you!