How much is my ivory tobacco pipe worth?

[c_adams_22]

I have found an Ivory pipe in my grandfathers house that recently passed away. It is in a box to keep it safe along with a slip of paper telling how to care for your pipe. At the bottom of the paper it says "Kitagawa Ivory Work Shop"-Manufacturer & Exporter...then underneath that it says "NO. 49, 3-Chome, ASAKUSA-SENZOKU-CHO,DAITO-KU, TOKYO, JAPAN.......The pipe is made up of two pieces and on the end there are many faces and landscapes carved out and painted...So does anyone if this is worth anything or where i could find out?