Rebecca, Needlecraft is a "badged" Japanese made machine. A badged machine is a machine made by one manufacturer and he sells it to many different distributors and stores who would then put their name either by a plate or decal with distributor, store or other name. Consequently, there may be a lot of the same machine with different names on it. It probably has a JA or JC number on the underside. Not all JA and JC numbers are known but there are some that have been identified by certain characteristics.
There is a forum for vintage machines on this board at
https://www.quiltingboard.com/vintag...thusiasts-f22/ and a rather long thread there about Japanese made zig zag machines
Vintage Japanese 'Badged' Zig Zag and Straight Sew Sewing Machines
If you look at
http://www.sewusa.com/Sewing_Machine...g_Machines.htm you will find "Deluxe Zig Zag #57 (139)" and a picture of it at
http://www.sewusa.com/Deluxe%20Zig%2.../SDeluxe7d.jpg
Janey - Neat people never make the exciting discoveries I do.