Share 'Hartel Boucher (angled 5th string bridge)?'

Has anyone ever seen one of these bridges? If so, does anyone know where I might be able to come across one? Sorry that this does not necessarily pertain to Minstrel Banjo, but I thought this the best bunch of people to ask. http://www.classicbanjorm.com/images/HartelBoucher/cutbridgelarge.jpg