Gooderham and Worts

Hi, I have a G and W 1832 commemorative decanter in the original box with an unbroken Canadian excise tape dated 1946. The little card inside the box (which is worn) says the whisky is a blend of "treasured reserves" that were from 10 to 35 years old at the time of bottling 66 years ago.

This decanter is part of my mother-in-law's estate, she has moved to a retirement home, and if this is a very collectible item I would like to generate some funds for her. If it is not very collectible, I'm happy to drink it. Any advice will be highly appreciated, thx- Dave