I have a bottle of Grand Old Parr Brand Blended Scotch Whiskey from the 1950's. It could possibly be older than that. The bottle is still sealed and all the labels are intact including a red/white label that says The American Distlling Co. New York, NY.  22106362. The front label says Product of Scotland. The bottle is brown/amber in color and has been stored in a dry, cool area probably since it was bought. My questions are:

1. Is the scotch inside still good to drink?
2. Is there any value in selling it.

Thank You!