Might be good
I can see exactly what you mean about the slant being off and more of a loopy signature. My first reaction: it's of someone else's hand other than Cochrane. Then I looked up exemplars from PSA's website and found this one. It has several similarities to yours. This makes me think the signature was from earlier in his career. What I'm used to seeing are items signed in the 1950's which seems more rushed and have that classic Cochrane slant. All in all you may have a nice earlier authentic signature.
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