The first picture is a 128 for sure. These are great little machines. The portable case generally is a Bentwood wooden case with the word Singer in gold on the case. The other ones were treadle machines. My 128 has a knee arm to operate it and it is a 3/4 machine. I love it. It does have a vibrating shuttle for the bobbin. The second one is a 99 and both are 3/4 machines. You can find them a little cheaper on E-bay, however you have to take into consideration the shipping cost. $75 is a good price in that condition.
Originally Posted by thepolyparrot
It's a 128, Vibrating Shuttle type with what look to be the La Vincedora decals. :) Very cool machine.
The "La Vincedora" decals were only put on the 3/4 machines (28 or 128) and the bobbin winder is up near the handwheel, so it's a 128.