It's Official!!! I found a 904KS (not a 9004, unfortunately) Corallo di Mare on our favorite auction site. Was a little hesitant to pull the trigger and the price was more than I wanted to spend initially, but since I've been looking for this pipe for several years, I figured this would be my Christmas gift this year. It is in great condition.
A couple of tooth marks near the button, but they might be able to be lifted with a little applied heat and the stem itself needs a little buffing to remove some oxidation. The stummel is in great condition. Just need to clean it up a bit with some Everclear to get it back to the "natural" state so I can start developing a nice patina of my own. It looks to have been smoked very little.
I'll have pictures up once I clean it up.