Northern Pottery - Chapleau, Ontario ( Canada) Also how to find a hidden Mark

Thought this might be Canadian, but I could not see any marks for the life of me when I bought it. It was only after I got it home, and tried some different light sources that I discovered some letters, and tried several very bright light sources and finally figured it out. The vase is about 8 inches tall, and about 4.5 inches wide. Probably about 1960's.

*** I wanted to show you how it may be possible to see a mark under Heavy Glaze***

It reads CHAPLEAU CANADA or a.k.a Northern Pottery (NP) - Chapleau, Ontario. The mark was NOT impressed, but an INK STAMP under the glaze and I was able to find it.

Just to show you what I saw at the bottom of this vase ( #1 ) and SAW NO MARKS -- until I tried some different light sources -- and spotted a couple letters. So I worked at finding a very strong light source -- and took lots of pics (with flash, and without) TILL I got something readable. ( #2 )

So sometimes YOU think there might not be a mark -- just keep trying, as this shows it is possible to find a mark.