I believe this is a secretarial signature.
I am sure this is not signed by Frank Sinatra. Here is a link that may help you.
cheers joe ,i,m just going through my childrens late grandfathers collection from 1950,s onwards at present i,ve documented 1,300 and still more to be added but,there will be some auto,s and secretarial i no but i,m a newbie so just trying to gain advice .
Wow! Sounds like a big challenge but one I hope you enjoy. You found the right site to get good advice. I bet you will discover many gems in your grandfather's collection.
part of the collection was sold in september by iaa in nottingham ,uk,if you type arthur westwood,there was beatles,michael jackson,letters from charlton heston etc,i have 3 letters and xmas cards from davy jones of the monkees from 1962 when he was 16 and in oliver befoe going to america ,the list is endless.
You've been given a great gift and opportunity. I could not think of a better way to discover this hobby than by receiving a great collection. It is a fascinating hobby.
thankyou for your kind words joe much appreciated,going through them all is like a name pops out and i,m a kid again its the names and the time and place you were when these people made memories ,a certain film or song makes us smile.