[groundskeeper]

I would not "invest" in cards.
THAT SAID, there are ones I clearly think are going to decline, long run.

Mickey Mantle has almost no appeal for people of my generation. Zero. The prices people pay on those cards are purely Baby Boomer supported.

Cobb seems like a blue chip legend but if even a TASTE of the social justice movement gets into this hobby, he is going to take a serious hit. I know I avoid Cap Anson cards for this reason. Try selling that in 20 years for a profit (over inflation).

I bought Cy Young as one of my first cards because it seemed cheap for a guy with contemporary name recognition (CY Young Award hit the news every year), and he will never lose the most wins record. But I think there's a ceiling to his appeal, and it is approaching.

Ruth is the king. The gold standard.