It's a beautiful coin. Congratulations!
Slabs are a matter of preference of course. If I were in the market for valuable coins, I'd appreciate the authentication myself - I trust David
Vagi and
his crew implicitly. Nobody bothers slabbing the coins I collect, except for a handful of
eBay dealers that think they can charge an
arm and a
leg for common coins just because they're encased in plastic. I see those coins up for sale over and over and over again - the prices never come down, and they are rarely ever sold.
At any rate, you've got a lovely new addition to your
collection there. Kudos.