I do not know if it is bonding or filling. I do not guarantee the skull cap to not have a break/ loss in the putty line.
See the pics for condition. This item is in the category "Collectibles\Rocks, Fossils & Minerals\Fossils\Vertebrates\Mammals". The seller is "rrsugartramp" and is located in this country: US. This item can be shipped to United States.