I'm trying to find an image or knowledge of the earliest known batman artwork to exist, I'm talking like earlier than 1942 if possible. As a lot of golden age art hasn't survived, I think it would be interesting to find which is the earliest Batman art surviving today.
I've heard of the Bob Kane Da Vinci sketches supposedly from 1939, but there's speculation to their authenticity.
https://www.bleedingcool.com/2011/02/02/detective-comics-27-production-proofs-offer-stunning-look-at-first-batman-art/ claims that a page from Batman #1 still exists. Any proof of this? Any photos?
Also know of the Batman #11 cover from 1942 sold at Heritage, so is there anything earlier than that?
Let me know what you think.
