It's not a hybrid. The original Chanel flap had the turnlock you see here with the leather woven chains, not the bijoux chains on the ones we see now. This style is the original 1955 style what was reintroduced later as the 2.55. IF this is authentic, and I say IF cuz it would have to be very very very vintage, it is lamb. Def get authenticated up and down, but if it's indeed authentic, it's an amazing vintage find!