Searching for a Specific Canadian Whiskey

Hey Folks, I'm a new face here. Does anyone here know where I would be able to find a 1L bottle of Canadian Crown Royal Whiskey from 1977. I accidentally had an accident with my father's 42 year old bottle he managed to buy in his younger years and have been kicking myself really badly for it. If anyone could help me find the product it would be highly appreciated, I have looked all over the web and can only find the 750 ml bottles. My father has never done bad by me and it pains me to have ruined one of his prized possessions. Price really isn't a factor for me anymore I just really need to find this for him. Hope to hear from anyone who can point me in the right direction