This has been in my family longer than I have. Family lore has always held that it was made in 1936 for Glenn Curtis and is the first 1-piece alloy propeller ever made. My Grandfather had a fairly stellar career as an Army Air Corp Colonel and this was something he brought home.
Hamilton Standard was sold to Pratt and Whitney, I believe, and there really is no archive. How can I value this?

[URL=http://s168.photobucket.com/user/samdiego_photos/media/prop001.jpg.html][IMG]http://i168.photobucket.com/albums/u170/samdiego_photos/prop001.jpg[/IMG][/URL]

[URL=http://s168.photobucket.com/user/samdiego_photos/media/prop004.jpg.html][IMG]http://i168.photobucket.com/albums/u170/samdiego_photos/prop004.jpg[/IMG][/URL]