I dug out a couple books to reference at home. I've got a Topps book of all the Orioles team baseball card sets through 1987. The cards on the pages are shrunk down to about a quarter of the size of an actual card, but of all the clear photo cards that have the players wearing the black crowned '66-'74 cap, this is the only version of the logo that I see:

I've also got The Orioles Encyclopedia. Not exactly filled with a ton of photos, but of the dozen plus or so pictures of players wearing that cap, I only see that same logo.

So I think it's safe to say that this is THE logo of the '66-'74 cap, made by Wilson Sporting Goods. So if they put out a repro of the '66-'74 cap, with that logo, I would be perfectly happy with it.

It's still interesting that all the versions of the Cartoon Bird logo made it onto the black crowned cap. I'm guessing that the other logos we've seen on this cap were some sort of prototypes:


or in the case of this logo, samples from the KM Pro cap company:


It would be interesting to know what company had exclusive rights to the Orioles caps during those years. My guess would be Wilson, since the majority of the hats from that era seem to be made by them.

I just found out through this site: ballcapblog that Wilson caps were manufactured by New Era, and most of the embroidery was done by under private label by Roman Pro.
Don't know if this was the case for this specific cap, but interesting info nonetheless.