Classic 1970's Model 93 Stronglight road crankset. These have 52/45 tooth chainrings that are not worn or damaged from excessive miles. The pedal threads are French and arms are 170mm in length. The non-anodized finish has some tarnish but will polish up nicely with Mothers (or a similar polishing compound).
Originally established in 1941 by a Six Day Track racer Oscar Juner & his wife Gay. American Cyclery is the oldest full service bicycle shop in San Francisco and continues to offer a world class selection of bicycles, parts, accessories & unique cycling ephemera.