Coffin tops tend to be 28, but 128 often came in bent wood cases. These are very similar models, the difference is the auto tread release on the 128, while the 28 top tensioner has a loab you push in manually. There are some differences to the bobbin winder too, but pretty much the same function. It runs nicely, I know of two cases where the owner has taken on a 28 and it has turned out to be a favorite, one of them swears it does the best top stitching of all her machines. I was suprised how fast it stitched. At the time someone told me long bobbins were slower than round bobbin models, but I can't say I complained about the speed at all. It was fitted with electrical motor and light. I hope your machine comes with a box of accessories, a few extra bobbins and the manual. If it doesn't new bobbins are still made for this model, and accessories can easily be found if needed. The are pfd versions of
the manual on the web.