Any Info Appreciated!!! Marked Cesare Lacca Double Teapot  

Hi
I am hoping someone can help me.I have a Cesare lacca teapot that apparently is a piece no one that I have contacted as of yet has any info on. I have been In touch with multiple auction houses but to no avail.i am told they can not valuate it or give any information on it as they are unable to find anything in their research materials or any past auctions.many have stated they are thinking this may be A custom piece.my question is where do you go to get an evaluation on something that there is no other records of.the closest thing like this that anyone has found so far is a pitcher that sold in 2006.but I have been told that is not a comparable item because for obvious reasons,it is different. I am at a dead end and I just keep getting contact this person or that person at this gallery or auction house. All responses are mostly the same they have no records or research to add and without more research they are unable to consign or help me any further...any info someone has will be tremendously appreciated as I am needing to downsize.thank you in advance.
http://www.collectorsweekly.com/stories/105882-vintage-modern-impressed-mark-cesare-lac