A two sided Safety SR set.

http://imgur.com/a/j2sU7 (pics)

Sorry for potato quality pics as my phone camera app is acting up. It's a double sided Safety SR made by Devine of Chicago. The patent on the blade says 1913. The razor comes with a comb guard that is slightly bent to provide a guide for proper shaving angle. The Set comes with a matching strop back hone. Going to clean it up and hone it this weekend when I unpack my stones.

Interesting. What was the point of two blades? are they ground differently?

That is neat. I think the double side allows the guard to work on both sides. Reminds me of the Durham Duplex.

Sorry for the long link but here is a cool old advertisement for it.

https://books.google.com/books?id=1...9hAD8#v=onepage&q=devine safety razor&f=false