that's a really cool collection.
any chance you can measure the axle to crown length on you aluminium O in orange white fade, the silver/polished fork, i think they are 390a-c but i just want to be sure. i'm looking for a fork to fit my aluminium O and i am sure they were 390 but when i last had an aluminium O i fitted initially a 420a-c and it rode fine, then i fitted the actual fork it should have had which was 390 and it felt terrible by comparison, i'd rather have the correct fork even if it rides terrible as this is gonna be a garage queen for my shop