You really caught the feel of those old covers..... some where done by "Chris Achilleos". which I discovered after many years of searching (on and off). ahh the memory's of yesteryear
He did many, but funny enough he does not have them on his site.
here is the only one I can find.. possible not the ones you had in mind when doing this but I will show the one I like .....if that makes any sense. [link]