HOW Question

I'm not a non-sport guy, but I love following your threads and viewing the cards you post. I have a question, though. Are the Hitler cards in the HOW set exceedingly rare, or is the value based purely on the subject matter?
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"All evil needs to triumph is for good men to do nothing."
R73 1933 Goudey Indian Gum - Series 288 - Nos. 118
Also looking for 1953 Parkhurst & 1953 Quaker Oats Ripley's BION.
If you have any available for sale PM me