I've been searching for an original american optical weld-cool lens #12 for some time now. AOSafety makes a new version of the lens but it's not the same. The new weld-cool is a green rather than an aqua blue while gazing through the lens while welding. If anyone knows where I can find the original weld-cool please let me know. If there is another lens out there that displays the same characteristics then please let me know. Thanks a million.