There is a 2011 thread about the Butterfly machine here -
http://www.quiltingboard.com/vintage...ne-t56341.html
Something that caught my eye was on the instruction manual has JA-1-1 on it which might be earlier than the one on the above thread.
AND it is a hand crank. I haven't used my 15-clone hand crank much, but it is fun. I'd like to find a 3/4 sized hand crank.
Janey - Neat people never make the exciting discoveries I do.