One of my machines has a JC number. I think it's my 15-91. However, if you will post a photo of it, we can usually identify the model. This site limits the size of your photo, so you will probably have to reduce the size. You can do that will most any photo program. When it's too big, it doesn't actually say, "it's too big". It says something like, "You can't upload at this time".
bkay