Flynn had a secretary and a very busy one and one who did a very good job imitating his sig. Therefore I'm not too sure on this one, but also I'm not too keen on this one. It seems fluently written and fits in style and the individual letters, but in my opinion the spirit of this sig is too well-behaved, not keen enough. I would stay clear, but Flynn is very tricky.
See what others say. Eddy and Eric Keith Longo are always a good address on vintage film autographs.