Finally got to it, lol
 

I finally reached the treadle machine in the back corner of my father in law's basement. She's in need of a lot of help with cleaning up and her cabinet and base are in need of a lot of help as well. But she is still able to move well and still really pretty given her age.....

Wow! You're going to have some fun, and you'll grow quite attached after all the work.

According to ismacs.net

Singer Dating - by serial number (ismacs.net)

Looks as though your serial number was allocated (and the machine maybe built) in 1901. And just think how much life might be left.

Model help
 

I know that it's a sphinx by the decals, and that she was built in 1901 by her number but can anyone help me with the model? I had earlier located an old puzzle box in his belongings and have put almost all of the pieces in it except for a ruffler foot. I was kind of wondering if it was belonging with this machine. I think that the table is original to the machine too, if anyone here could tell me if that's possible or not.

I'm pretty sure table is original. It is much like my 1903 model 27-4 (which is the same model as yours) and yes the puzzle box would have come with it.

Janey - Neat people never make the exciting discoveries I do.
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Wonderful, thank you so much ☺️. I know that I have a lot of work to do on all these beautiful old machines, but I honestly am excited and looking forward to doing it. My husband has already told me that I can't keep them all🤣🤣🤣. He knows me so well, lol. But I still want to restore them as best I can and make them shine again. It's amazing how well these old ladies hold up after so many years of being used, or abused or even forgotten about.