Beemah if you don't have any luck in your search, I might be able to hook you up.
I've got a generic one of these:
http://www.cigarsinternational.com/prodDisp.asp?item=M-SH150&cat=10
It has plexi-glass instead of glass & it's seal is about average.
If one were to invest in $10 of rubber weatherstripping then it would hold humidity great.
You'd just have to cut the weatherstripping and stick it in alongside the corners of the lid.
You got my #.
