1986 - Anatomy of a cover - The Punisher #1

From Michael Zeck on Facebook:

"Punisher Limited Series cover 1 _ from a scan of the original painting. The colors suffered on the printed comic."

1985 - Punisher #3: Anatomy of a cover

Here are a few preliminary sketches for the cover of Punisher #3. (grabbed from mikezeck.com)

Here's Phil Zimmerman's panted version.

And the published version.

And here's the version that Mike Zeck inked himself.