This one you have to take to the DNR and get their blessing IMHOsadly I was locked in a cold room with it, traumatic experience, so I do not wish to keep it in my house and my son has no interest in it.
Some times they allow one to keep it and even pass it on with out the paper work or give new paper work pending the age most times they don't and the original paper work has to go with it and be available to do anything with it legally
Being so old the odds are in your favor to be allowed to dispose of it as you see fit but I would ask first
I have/had a bunch of owls done over the years and all went through them to get done first for the paper work and to move on years later to new owners If the original paper work is there they can be legally bought and sold in Nova Scotia but must stay within the province
Here is a post from a member who is a taxidermist here some years ago see post 12 here
Owls/hawks/falcons can be sold or bought as long as the original possessor has a permit for it. When an owl is found dead, it is taken in to the DNR where a permit to possess is issues (its free) On the permit there is a section for the taxidermist as well as for the person who found it. There is also another line that shows "final possessor" Your owl can be sold and the new owners name goes there.
Remember, the animal of any species found on the road and offered to be taxidermied must be accompanied by this permit. The permit MUST stay with the animal for its "life". (A taxidermist will ask for a copy of the permit while the animal is in their possession waiting to be taxidermied the original stays with the owner.) If you gift or sell the animal, the permit must go with it.
If someone offers you an owl, ask for a permit from DNR, if they dont have it, dont take it. DNR inspects all the specimens before issuing a permit.
Just a friendly reminder, NO ONE is allowed to take an eagle off the road. If you find one, contact DNR, dont touch it. DNR will come and claim it.