WOW! That is 9/72 , same as the ItalVega I posted. They can celebrate their B-Day this month. One half a century and still going strong. I have been out of town for a few days so just now catching up. I agree with Ben about getting as much of the crusty rust off the fork plates even if to leave it exposed. A little clear over it and extra care will keep the rust from becoming terminal . Some of the chromed parts of mine are just steel now as when I removed the rust the chrome did not survive. I just keep the bike clean and if. It gets wet I clean it right away and put a bit of wax on it. I finished the bike in 2017 or so and the rust is not getting any worse now.