I have a set of 4 hand carved asian chinese shell hand carved pieces of art. The art itself is 23x9 and the art inside the frame is 12 3/4 x 31 1/2. There is writing on them but it is in asian and I do not know what it says or if it is a signature. I would like to know the value or where to find the value of this set. I do know that they are vintage if not antique and very valuable but not exactly sure how much, if anyone can help that would be great.