I was recently given a bottle of Cabin Still Kentucky Straight Bourbon in a Ducks Unlimited "Wings across the Continent" commemorative porcelain decantor. Distilled by Stitzel- Weller, 4/5 of a quart corked in 1973 and had aged 5 years when it was bottled. It appears to be unopened, but the tax label has been broke, this mostly because the top portion of the cork has a decorative duck on it and it has broken off of the main body of the cork. I guess it has to be broken to get it open, looks as if it got knocked around and it came off. I can spell the bourbon a little if I smell the cork. Question is, will this be any good to drink, will air have gotten to it over time and "skunked" it up? And what is the value of this commerorative decantor, it came in the original box as well?