Is Richelieu jewelry marked?

I have heard that Richelieu jewelry is not often marked. Most of the ads I have looked at show attached tags. I do know that the jewelry is sometimes marked, but found it interesting that in their trademark filing in 1943, they state that "The trade-mark is applied or affixed to the goods by attaching thereto a tag on which the trade-mark is shown" So, by their description both methods were used.