First off - I'm asking about the safety of the wipes and somehow spell check changed the title of this thread. The brand name of the wipes is: Carbona. They are not "carbonated wipes."
Second - I have several different pieces of this stuff and most of the markings have been polished off. What I can make out on one is: Forbes Silver Co USA Quadruple. Then there is a stamp looks like: 517. Then engraved by hand: 5773-10