I believe that it is chinese but other than that I have not been able to find any information. I have looked on several websites but have not found these markings. So I figure they are either rare or knock offs.

Here are the pictures…

https://plus.google.com/u/0/118271356079216750399/posts/AuktW9PYamh

https://plus.google.com/u/0/118271356079216750399/posts/e5WAQkjEMVj