I have a Supermatic that looks very similar to yours. I found a manual at the yahoo group elnaheirloomsewingmachines:
https://groups.yahoo.com/neo/groups/...ewingmachines/
Look at the plate where the power cord plugs into the machine. There should be a number. It's likely you're looking for the manual for a 62C or SU62C.
If you ever need parts you can't locate locally, you might be interested in
http://www.whitesewingcenter.com/index.php
He's probably the expert around on Elnas and if you read around his site you'll probably learn more about your machine.
I had to replace the power cord on mine, but I did find it at a local shop for only $15.00. The good thing about Elnas is that the cams are interchangeable with the different machines, although the earliest ones won't accept the double cams.
Good luck and enjoy your new machine.
John