"Tricky autograpraph to authenticate - especially the late ones.
I certainly wouldn't rule this out instantly. Perhaps a touch too boldly-written for this time in his life but wait for other opnions.
Can you add reduce the image in size and post…"
"The OP is definitely fake. The second one looks possibly legit; however, given that he’s dealing in one fake, that fact would still make me leery of the second one...even though it looks much better."