That red one's making me a little nervous. That's the first time I've seen a strap like that on a vintage bag, and the covered turnlock back bothers me too. Are there any stamped marks in the hangtag chain or on the back of the buckle?
ETA -
Making a correction - there was a style available in both smooth and suede leathers with a similar strap, but it goes back to the pre-creed days and had the little metal
Coach plaque, no stampings at all. Obviously it's not the same style as the red one but Coach did make a similar strap. I still haven't found anything to match the red bag though.
Can we see a clear Macro pic of the creed and serial number?