Here is a mask I would like to know more about. In my book, Masks of the World, it is on page 94. The description reads:
Unusual mask– Alaska or Canada, 6.7 inches, carved red cedar
We saw a crude Tsimshian mask that was cylindrical in shape like this one, and had a long nose attached to the face, but was otherwise different. It also has an Inupiat or Yup’ik feeling. There are no string holes and the nose is nailed in place. The paint is aluminum so it is probably 20th century.
And don’t be afraid to tell me if you think it is something completely different. I am not an expert on all masks, and can admit to occasional mistakes. 
