Are they Berthoud, like the stays seems to indicate? Or at least stainless steel? If so, just know that you shouldn't mount them with any stress : if they don't follow the tyre perfectly well, too bad, that's your fender line now. Otherwise, as I've learned through personal experience, they'll crack, most likely at the seatstay bridge.
As @yoshy is saying, leather washers are recommanded between the mudguard and both bridges. Also, put a large washer between the mudguard and the head of the screw at the seatstay bridge. Shape it in a vice before hand so that it follows the shape of the mudguard. Or buy one of these from VO.
Are they Berthoud, like the stays seems to indicate? Or at least stainless steel? If so, just know that you shouldn't mount them with any stress : if they don't follow the tyre perfectly well, too bad, that's your fender line now. Otherwise, as I've learned through personal experience, they'll crack, most likely at the seatstay bridge.
As @yoshy is saying, leather washers are recommanded between the mudguard and both bridges. Also, put a large washer between the mudguard and the head of the screw at the seatstay bridge. Shape it in a vice before hand so that it follows the shape of the mudguard. Or buy one of these from VO.