I was reading an interesting conversation about a LaReine sewing machine on the QB from 2011. Something about a LaReine / Honeymoon machine. Guess it was puzzling and a mystery back then also. The attachment that opens is Davis which I can tell by the irons. No head pic unfortunatly.
http://www.quiltingboard.com/vintage...3881-1509.html
Good luck with your search.
Jon
PS----Davis Honeymoon photo half way down
http://knickoftime.net/2011/10/my-de...nary-wall.html