Dating your singer featherweight
The 127K had its bobbin winder in a high position and had the same type of vibrating shuttle or sometimes called boat shuttle or even bullet shuttle...!It had a larger bed size at 14-1/2" The Singer 128K was manufactured around the same time as the 127K - 1912.The Singer 28K was small at only 12-1/2" bed size and had its bobbin winder located high-up near the hand wheel. Singer 127K sewing machine was very similar to the 28K.
There are lots of Featherweights for sale on e Bay and elsewhere online, but I think it’s best to see the machine in person if you can.
The machine in the image had a small type stitch length, later varieties had the stitch length lever protruding out from a large round numbered disc.
The Singer 15K was manufactured over many years from 1910 - 1964, then reproduced again in 1982 called the Singer 15N.
The Singer model 128K also had the vibrating type shuttle.
The Singer 201k was named the Rolls Royce of sewing machines because it was super smooth in operation thanks to the full rotary hook and precisely made carbon steel gears.