Early 60's Falcon Black Diamond frames had non-forged dropouts, no derailler hanger, and Reynolds 531 maintubes. I have one. The oilport in the BB does not look familiar however, and almost looks like a replacement perhaps? If the front wheel is 32h, the rear would have been 40, a common british setup. My 62 Black Diamond frame came with a lot of Milremo parts, including hubs, stem, and bars, but did have the Dunlop steel rims and huret components, with a Williams cottered crank and Atom freewheel. The front forks were half-chromed. Are there 2 holes lined up vertically where the headbadge would go? The Falcon headbadge is attached that way, via small rivets.