I have no idea as to authenticity, but Joseph Cotton was a terrific actor.
He was brilliant in "Shadow Of a Doubt" with Teresa Wright.
Tom Courtenay is one of my favourite actors and this item is 100% authentic. I don't know the other signature
Thank you, Dan!
Thank you, Steve! It is not exactly the same, but I tend to think mine is real too based on yours and the different ones I have seen in the internet. He had different signing styles over the years.
I don't know the first. The Joseph Cotten is good. An underrated actor of the era.