Curtis Canadian
This is a Curtis key HK-1. This was on a Curtis key rack that originated in Canada. Curtis Ind. Canada Ltd. Can't find it in my 1982 Curtis key book. What lock used this key?
https://imgur.com/a/mgak6WZ
https://imgur.com/a/mgak6WZ
...Warm smell of colitas, rising up through the air... Eagles, Hotel California, 1976