I have an unopened bottle of Canadian Masterpiece by Lord Calvert bottled in 1957 it is serial numbered and comes in a red presentation case. On it it says that it is a blend from the five different distilleries in Canada and that it is registered by the distillery. I have tried to contact Calvert Distilleries of NY, but to no avail. Can you shed any light on this bottle?
Distilled spirits like this are so high in alcohol that they don't change much, for better or for worse, over time in the bottle. So the good news is that this stuff is perfectly good to drink. But that also means that this hasn't appreciated in value the way some fine wines do. The liquid inside is very much like it was when it was bottled. And it doesn't really matter how old it is, that liquid won't change in character or value. This is a rare bottling...but I haven't seen any increased interest in these bottles over the years.
But there is another part that I don't know, because the bottles themselves may be worth far more than the liquid inside. I would contact the nice guys at antiquebottles.com to see what they have to say about this. While the Lord Calvert will sell for less than $100, the bottles could well sell for more than that.
It is illegal for US citizens to sell alcohol directly, so you'd have to go through a retailer or auction house---and that means paying a significant commission.
Hope that helps