Looking for an old Sleepweaver Advance mask

Hi all--I'm not a frequent poster to this site, so I apologize in advance if this isn't the right place to post, or if I'm not supposed to be posting this at all, etc. I'm wondering if anyone has a new or gently used Sleepweaver Advance mask they would be interested in selling. The catch is that I'm looking for the previous version--the kind without the "improved" seal (it's gray, not black). This has been the only mask that's ever really worked for me, but I haven't been able to stop the leaks in the new version. If anyone can help, please let me know--I'll be incredibly grateful. The goal is to get a couple of these so I can avoid having to find another mask for as long as possible. Thanks!