Thanks for the reply. Yours is a nice signature. I am aware that the one I posted is atypical. It's purportedly from 1925 which is pre-fame so I'm wondering did his autographs change over time - as they often do - or is it an outright forgery? It's difficult to find any other exemplars from that early in his life!
The one above it is an example from 1960 that sold via RR earlier this year. They really aren't that dissimilar. The 't' hasn't been crossed in the 1925 autograph. Don't get me wrong there are other differences as well, but they were supposedly signed 35 years apart ....