Found some St. Bernardus Prior 8 at the liquor store. With a face like that you know it's good stuff. Typical belgium but fairly light flavored, almost no hops and a little malty sweet.
Those are the guys that used to contract brew Westvleteren. I believe that bottle you have is their dubbel. Yes it is I see. Some say their quad is better than a Westy 12. Enjoy!