Jim,

I had to go over it three times before I noticed it, even though I knew there’s a variation.

How about when a casino has a trademark ™ then it gets registered ®. It is so subtle. Here are a few examples.

In the top card MGM with the lion logo is ® and MGM Mirage is ™. In the second the whole name MGM Mirage is ®:

Wynn had the same changes made:

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That's what I like about collecting variations. It keeps me on my toes.