What kind of cap is Herc wearing in Season 1 of The Wire?

Answer 1

"The kind with the bill in the front."

Actually, the B logo hat for Baltimore Orioles was only used in 1963 and number 23 was pitcher Chuck Estrada.

Now... it could be that it was a reissue of and old style hat for current players as the colors are different than that of the 1963 cap. The 2001-04 roster lists First Basemen David Segui as number 23. Based on Herc's character I think he might of liked this steroid abusing knucklehead, but then again, I'm just guessing here given the facts I have to go on.

Here come Omar, got to run...