I'm going with ROSS!!!!! (Budget model) A Ross 'compact'
https://backroom.hardsdisk.net/compact.html
From the website-
The ROSS Compact is kind of an oddity. It came in one frame size, 17 1/2", with an extra long seat post which could be adjusted to fit a wide range of body sizes. It could grow with a young person and even accommodate a medium sized adult.
It had curved frame tubes at a time when all other drop bar 10-speeds had straight tubes. By the early 1980s, the Compact had exchanged its curved tubes for straight ones with a sloping top tube. Two ladies versions were also offered with drop or upright handlebars.
The Compact frame is lugged only where the seat and chain stays meet the dropout and this simply consists of flattened tubes where the dropout is inserted. I have to assume these joints are brazed since I don't see the spot welds, usually found on this type of inexpensive production joint.
Granted - this is not the exact frame... but....an earlier modeal year: Here are the similarities:
Stem, front fork crown, rear stamped brake mount. shape of rear stamPed dropouts, tops of the seat stay shape (rounded like a schwinn), seat/ and seat mount (mounted forward), Crankset, slotted dork disk (some are round holed) , crap headset welds- not lugged like nicer ross.
edit- another clue (this is like playing "where's waldo")- The cable stops on the frame. On the top tube and downtube. Weird- I would figure that level frame would just have the cable housing run the whole way and use cheap clamps to hold it to the frame. Not here, not only that, they appear to be the same design, even though pics aren't really high res.
