What Would You Do with a Sealed, 1st Press Miles Davis "Kind of Blue"?

bpd24 is correct on inner sleeve. I’m confusing record lables!

It’s that flimsy film type.

As far as what to do with it...Unless you're not into MD, open it up an enjoy it. 
What's the point in owning any material thing, and not enjoy it.

I'm always on the lookout for a good period mono.
One of these days.

Had time to further confirm this is a first press, mono, from all the following together:

- LP labels are the Iconic red and black 'six eye' Columbia label and "CL 1355."
- Matrices run-outs are stamped "XLP47324-1D" (side 1) and "XLP47325-1AD" (side 2).
- LP label, side 2 lists tracks as "All Blues" then "Flamenco Sketches."
- LP is in a limp, clear plastic inner sleeve, rounded on three sides, plus one side straight.
- LP cover, back, has Cannonball Adderley's name misspelt as "Adderly."
- LP cover, back, lists "Flamenco Sketches" then "All Blues (so opposite order of the label).

There may be other tell signs for a first press, so thank you in advance.

You at least have an early period press.

I would invite a few friends over who can truly appreciate it, and listen to a piece of history. Ask them to bring over a few bottles of a 59 Bordeaux.

That’s what it’s all about.

Whether to keep, open, and listen, or to sell? Well, how much do you like Miles? One thing to know is that the LP was long available only mastered at the wrong speed! That speed inaccuracy changed the pitch and tempos of the music, of course. The mistake was not discovered and corrected until Classic Records reissued the album in the 90's, I believe.

If it's sealed and you aren't a lp/historian...

Is there any way to tell if it's a 6-eyed Columbian? Mono/stereo?

This is key to it's value.

Of coarse a 6 eyed- mono will be worth more than a 6-eyed stereo.