I recently won a set of NR/SR campagnolo cranks on e.bay.Seller advertised them as 175mm gold anodized track cranks.Apparently he rode them in the Australian Track pursuit championships and that was the only time they have been used.By their condition I don't doubt him.When they arrived I looked at the markings on the back and noted that they were made in 1980 but are marked Strada.My initial thought was that they were BMX cranks and the gold anodizing supported this train of thought. When I looked up the time lines available,the CR one says that the only 175mm BMX cranks were silver and the one on the Campy Only web site has a picture showing a BMX bike with the chain ring on the inside much like a road bike.These cranks only have room for one ring on the outside just like a track (Pista ) set.What have I got? Geoff Duke in Autumn Melbourne Australia