Sorry, I can't ID the brand, though it looks like it could possibly be a department store brand. It appears to a 1970's, entry level model, though it's not bottom the line. While I can't get a look at the dropouts, the frame is probably hi-tensile steel, based on the components. The aluminum, swaged, cotterless crankset is is what makes it better than bottom of the line. It also appears to have a guick relase skewer on the front hub, though it is improperly closed. The hub also looks like it may be aluminum, though the rims appear to be steel.