1W 450nm eBay Special

[paul1598419]

Would they actually use a M140 over a A type? I'm thinking also they are highly used recovery's?
alphabirth, do you see any markings on the safety glasses?

It's hard to say. It could be a used A instead of a used M. The only way to tell for sure is when one dies and someone takes it out to replace it. From the back the two are easily distinguishable.