I don't see how folks can say that the top tube is bent based on the photo, but maybe they're eyes are much sharper than mine. If they're saying it's bent because of how it meets the lugs, you can disregard that because it was fairly common practice to cheat a bit using lugs whose angles didn't match perfectly.

In any case I suspect that the fork isn't original to the bike for a number of reasons. First the frame has fender eyes while the fork doesn't, and It would be unlikely for a builder to mismatch it that way. Also the fork and frame use different brand dropouts, and lastly the tube finish at the dropout is different in the fork vs. the rear triangle.

Question, before you removed the paint, was there a tube decal ie, Renolds or Columbus anywhere. If not, look closely at the ends of all the tubes for stamp marks, however faint. Either an oval for Columbus or the word Reynolds, or any other branding. Almost all premium tube sets have the brand imprinted on the tube, and this should still be visible.