What a catalogue of information from a specialist. To be able to see all that from a single photograph! I had heard of the 'bird cage", and you confirm that the system is used here.
I note that it is not Canadian: is there any possibility of a Willis branch or subsidiary in Europe, or even another firm with the same name? If the name, gilt-painted on the black, were not genuine, I'd imagine the perpetrator would have chosen a more prestigious name. A friend had a Bechstein upright, and that would have been more impressive. I was aware from the start that the name on the case would not impart any prestige when pianos were being compared.
I am planning to pass the instrument on to one of my children, whenever he has a house with enough room for it. I'll print out all your comments and attach them to the piano. Such information enriches it.