These are fantastic Hudson green penny round tiles, love the brass edge color, it looks amazing on my new bathroom floor!
I will add that these tiles are a lot more difficult to work with for an average DIYer, as you have to take great care when laying out the sheets to maintain the exact same spacing as there is between the individual tiles themselves, because if you're off a bit, it makes it easy to see the square pattern of the 12"x12" sheets.  I had to go back and pull up a LOT of individual tiles and move them in order to hide some of more obvious mistakes, but in the end I'd have to say it was well worth it.