Old Dia-Compe cantilever brakes. Is that an old touring bike or cyclocross bike? Apparently, the brakes are designed to mount on what are now non-standard bosses. Is the bike worth having new bosses installed? Maybe used replacement brakes on Ebay? I have no idea about a model name/number. Maybe post some better-focused pics on the classic and vintage forum.
Have you tried looking at Ebay or googling dia-compe cantilever brakes?