Originally Posted by cyclotoine
Early 70s butted 531 decal fork tubes and stays: Note: No registered trademark and no TI this is different from Neals 1974 international and I must ask Neal, are you 100 percent sure that is the original decal? I was under the impression, this decal

came before that (can someone chime in as to when TI was added?)
According to the Classic Rendezvous page, it was "early to mid 70s" that the TI designation was added to the decals, and that page notes that "it's not entirely clear" when that happened.
As far as whether that 531 decal on my '74 Int'l (according to its serial #) is original or not, its condition is consistent with the rest of the decals on the frame, but, of course, I can't say for sure as I've only owned it for a short while. I sold a different '74 Int'l frameset over the summer, but, unfortunately, the 531 decal was gone.
Neal