Originally Posted by
juvela
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This particular eagle crest on the crank arm indicates a set which is part of the Sakae Ringyo Custom 3 series.
There are other models of the Custom 3 with a forged 3-arm spider where the outer chanwheel is removable.
Three-arm SR sets had been discontinued by the late 1970's.
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The cottered steel set with the lacy single chainwheel is Italian and was employed on the Bianchi planetary three-speeds of the late 1950's and early 1960's - typically marked "Bianchi." Do not know the maker. Usual suspects are Way-Assauto, Magistroni (Giostra). Gnutti and Agrati.
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As always, your knowledge impresses...
1. The SR custom was the route I looked for, but I could not find anything with double fluting, nor the "BS" in the engraving. I found plenty of similar single flute, SR engraved cranks. Also the chainrings are oddities.
2. Good call with Way Assauto; I limited myself to Magistroni and Gnutti.
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