A very kind friend of the family just gifted me a 25" frame World Sport. I was surprised at the light weight. The year is about 1983, since the Sugino crankset has a "783" in a little circle, back side.
The S/N is GM837xxx, so I assume it's a 1983. It has Suntour RD model α 3040 , no model on the FD, Suntour selectable friction/index shifters, HTI pedals, etc. The frame is moderately light: 2490 grams/ 5.08lbs
Is it a decent frame?