¾ The eclipse glasses I bought came with a certificate. There’s nothing printed or engraved on the glasses though. No product name, no certification seal, nothing. And the certificate, it turns out, has nothing to do with their optical properties. It only refers to standards about the absence of toxic materials. You’d be wary at this point, but only until you read that in the weeks before the eclipse of 2017, the market was flooded with glasses that had all sorts of official certifications printed on them, and all of them were fake. So the American Astronomical Society has put together a website listing certified vendors, and the vendor of our glasses is listed in the section of those who did not initially provide convincing certificates, but after being contacted, allowed their glasses to be actually tested, and passed. So that’s that. Also, I can indeed not see anything through those glasses, except a very faint trace of bright LED lights, if I look directly into them. Which is how it’s supposed to be.