Here's a picture of a 1961 Peugeot 403 Cabriolet with a similar dashboard device. I couldn't find anything that identifies the thing, but anyway here's a good look at it. I still think it's a defroster.
Hi Fred. You want to use a site that will let you upload an image and get either a BBCode or an HTML link for it -- then you copy/paste that link into your post. In the past I've used Photobucket, but I think it no longer offers a free version to new users, and Imgur no longer makes this easy -- so, lately I have used Picoolio (as in my last post). You can find several choices from a Google search on: free image hosting bbcode . I hope you will try it and have fun.