Are you sure that's a Double Ring. Maybe a Luna or other German clone. The teeth look too long for a Double Ring.
The head of a Double Ring looks pretty much as the head of a Single Ring. The Luna has a more flat head without a curvature... Does it have any serial number?That did came to my mind, but I wasn't 100% sure and I didn't wanted to look goofy asking this question , but now that you mention it, I have serious doubts about this razor.
The head of a Double Ring looks pretty much as the head of a Single Ring. The Luna has a more flat head without a curvature... Does it have any serial number?