it is either a 115 or a 15. I suspect a 115 but I would need to see the face to be sure (I am just becoming aware of the 115 and it's nuances)
here is a thread that discusses it
http://www.quiltingboard.com/vintage...e-t216990.html
The decals are called "Gingerbread" or "Tiffany"
I am looking specifically for a model 115 with a serial number between G4948471 and G4950470.
These were ordered on October 20, 1916 (My Grandmother's BDay)