Well, I bought my first one, so I guess it's this:
Recent Ebay Purchase
The one with the bottom torn off is Hardie Henderson - Base Ball Pitcher.
Sure shows as a beater. I like some of the others, like Juvenile Roller Skating Champion! Saw the 1887 Allen and Ginter Cap Anson PSA 3 last week on eBay and almost clicked Buy-It-Now at $1200. That seller seemed to way underprice the item, and it was gone within three hours after being listed. That would have definitely been a splash into the pre-1900 market.