It was put there after they "Mistakenly" minted a few without it. They got blindsided by the outrage, then they added it. I don't care what Snopes says.
I don’t care what snope says either. You’d still have to find a source to cite, if you claim that IGWT was never part of the design, from start to finish. There’s a lot of steps involved in coin design and production. It’s possible some were minted by “mistake”, but to me the whole issue seems a bit over the top.