1981 Sportsworld MX121
Nice Aussie survivor
Bought in Tasmania recently; I believe this frame was made in Australia. It's a pretty low-end bike (supermarket?) but it has quality Japanese parts. The frame looks like a Mongoose (I'm not a Goose expert but that was my first impression). Looks pretty strong with that extra gusset at the bottom of the front triangle.
***UPDATE*** it now has OGK mags, a coaster brake, and CW-style bars. Yes!
Submitted by Andrewnow