I found these clogs/(mules) in a family trunk and unable to identify them through online resources. The contents of the trunk are mid Victorian - Edwardian (US) so I suspect that these clogs are also. I learned that clog dancing was popular at the time and wonder if they were designed for that (but shouldn't they at least have a back-strap?) or were they designed to keep the owner free of mud from the streets? I would be very grateful for any identification.