No. The 1889 E. R. Williams Card Game #10a Charles Comiskey / Roger Connor is not a rookie card. For Charles Comiskey / Roger Connor's rookie cards, look for the RC designation — typically from their debut year.

What set is the 1889 E. R. Williams Card Game #10a Charles Comiskey / Roger Connor from?▼

This card is from the 1889 E. R. Williams Card Game set, produced by Unknown. Browse the full checklist for all cards in this set.

Is your 1889 E. R. Williams Card Game #10a Charles Comiskey / Roger Connor a PSA 9-10 candidate?

Upload a photo and our AI grades it in seconds — first 25 scans free.

Grade My Card Free

Predictions on this page are generated by AgentGrail AI and may be inaccurate. Verify any condition or pricing claim before making a purchase decision.

How we identify and grade cards · About AgentGrail

Compiled by the AgentGrail team