Here are Scott Mathauser 40mm 'RUST' brake pads for old Weinmann centerpulls. Address is in picture. No other info was sent. Hope this saves someones life in the rain. It took me 3 weeks to get these, but Kool Stops Continental 40mm RUST salmon brakes are unobtainable. I like these thick solid rust pads, so will try these first, since only ones available, lol. About $20/4 brake pads.
http://www.dooberywhatsit.com/
:-)