The middle 70's Suntour GS dropouts had an interesting feature, the "web" that arced up to the seat stay tab swept outboard in profile, this allowed the seat stay to remain round all the way and still provided lots of clearance for the chain and a sixth cog. This design was only seen here and there, there was a push to get them in the hands of US craftsman builders in 1974, those samples are how I first saw them. Not a bad idea that never caught on. Campagnolo was king. A frame with Campagnolo dropouts just was given a higher pedigree than others.