Sr semi pro

[Billythekid]

@The Spokemaster i believe I found it in the catalog link bulldog sent

Sp-100al for the pedals
Ct-p6 for the seatpost
From the 1980 ringyo catalog

 

[bulldog1935]

I still didn't think anything, just provided links to relevant information, including the SR catalog links from one of my favorite Japan bike history websites that goes back into the 50s, and references before the war.
Part of what's interesting, I love that the Japanese took over from the French constructeurs, and his website is cyclespuegot.web

The catalogs of Japanese vintage bicycle