I need help identifying this Stanley handplane

I received this handplane from a friend who's father was getting rid of old tools. It has very few markings on it. The only markings it has that you can't see in the picture are a 4 under the tote and a Stanley Sweetheart logo on the top of the blade.

This is the only picture I have of it assembled (minus the knob which I had already taken off). It's now completely apart because I'm going to restore it but if you want pictures of specific parts then I can take those.