RFK photo-Senator era

[Nicholas]

Hello

Came across this in a local auction, any thoughts on this ? I am pretty unfamiliar with kennedy autographs but I have a gut feeling it's not actually his ?...It does come with a original mailing envelope of Robert Kennedy when he was in the Senate.

Thanks for your thoughts..!

[Edward Siebert]

This is secretarial, and not real. RFK's writing and signature was much more angular and cramped. Way off here.