Memorabilia Question - how to display a pennant

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Let me start off by saying - Im a card guy, not a memorabilia guy. I have a handful of autographed baseballs and those are plenty easy enough to handle, store and display.

Awhile back ago, I came into an unbelievable gift of a San Francisco Giants team-signed pennant. We've narrowed it down to about 1962. It is a red/orange felt pennant with numerous signatures including Willie Mays, Willie McCovey, Orlando Cepeda, Jack Sanford and others.

The thing is - I have no idea what to do with it. I clearly do not want to thumbtack it against my wall. Im apprehensive about putting adhesive on the back and frame mounting it. What do I do? Should I bother to have the signatures authenticated? If so, what does PSA/SGC/Beckett do to encase?

Pictures (just for grins) can be found here....
1962 Giants Pennant

And incidentally....any guesses on it's worth? To be clear - it is not for sale, but I wouldnt mind having a rough idea of what this might be valued at.

Thanks all!!!