Merry Christmas!

As an early Christmas gift, my father in law received a bottle of Grand Old Parr from his mother vintage 1967 (the whisky not his mother.) I have attached pictures and am looking for some help at pricing this bottle.

Box: Good condition
Bottle: Good condition (date received written in the bottle)
Whisky: Unopened bottle.
Age: 12 year whisky (received in 1967.)

We are trying to figure out whether we should enjoy the bottle or sell it and purchase a small Volkswagen. Thank you in advance for any help.

-graham