I think it may very well be an authentic rushed example. However it's such a short squiggle it's one of those I think is near impossible to authenticate which essentially makes it worthless in my eyes.
Agreed, Tim. I've personally never seen a Clapton signature that ended like this one - even a rushed one. That being said, I guess it *could* be real, but why bother owning it if there's no consensus and it looks this atypical?