Unique China Cabinet please help identify

[liaison]

This Cabinet was given to my Mother years ago by an elderly woman in Boston. I have searched and searched and cannot find anything even similar. The difference between this and other I have seen is the curved glass door curves inward on the bottom door and outward on the top door.  Also the top of the cabinet has blue glass windows. The woodwork is also something I cannot identify. Can anyone help me? you can see pictures of this at     http://www.flickr.com/photos/33272679@N04/

[D&b antiques]

It's about mid to late 1920's. the blue glass was popular during the art's & craft's time frame. it's called a side by side, it was sold by ( larkin soap co ) so we call it a larkin.

$3,500.00 Dollars.