great find and will restore beautifully , unicrown forks came along later so this design of forks was de-rigeur early 80s up till around 86, 87 ish and it also probably indicates hand built frame construction using frame tubing that has to be brazed and cant be TIG welded.
quality like this is becoming increasingly hard to find
So I've bought it now, going to try and keep the original finish and slowly restore, I've got a six speed set up to install from around this era and some lovely mavic oxygen rims with a nice silver finish.