Welcome. Unfortunately the pictures of your particular machine are not showing. This could be that the "Upload" button was not clicked on, or it could be that you previewed your post before actually posting. When you preview your post the pictures vanish into cyber space, so do not preview your post. You do have 20 minutes to edit your post after it is posted.
It is quite possible that there is a J-A or J-C with a number after it, somewhere on the machine.
As you have found that there as not a lot of specific information on these vintage machines.
Good to hear that you have a good working machine and are enjoying working on it.
Janey - Neat people never make the exciting discoveries I do.
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