Thank you gentlemen for your input and advice.
English Bloke, yes you appear to be correct. At least from a visual perspective, mine and the one in your link are VERY much alike.)
I will do a bit more researching. It's unlikely I will sell this (for sentimental reasons, and because I frankly don't think the box or labels are in mint enough condition for a true collector,) but I was curious.
At some point I have to think, collectable or no, it was made to be drunk, so drink it I probably will.

I did have one more question for the gentlemen here (ladies too if you've the answer.)
I apologize if this is a basic question, I'm just not familiar with old spirits (insert clairvoyant joke here.)
There is some small "debris" for lack of a better word, in the whisky. The seal appears to be tight and unbroken. Is this normal for a bottle presumably 30-40 years old?

I'll keep you posted with developments.