I am not sure if I am allowed to do this or not. I have looked all over the internet for photos of my machine since I have no wayof taking a photo at this time. I found one on ebay. It is the exact same looking sewing machine, case, table and all. I don't have all the accessories this one has and mine doesn't have a light but everything else looks the same. The manual with mine says mine is a 99 dated 1920. I in no way endorse this one on Ebay nor do I own it or know who does. Here is the link if you want to look.
http://www.ebay.co.uk/itm/SINGER-99-...-/390362489470
Does this help any Grayhare?