IT IS A stunning and incredible art work fine details mosaic of 1000's of tiny stacked marbles to form a beautiful tiger portrait, although it is sealed between a class sheet and a canvas covered wood sheet. They do not appear to be glued but stacked one by one, I do not see any glue residue between a marble and another I can not definitely tell if they are glued or just stacked. It is not signed but a definitely fine artwork that will be a unique decoration to your place.Image size 12" X 15.5" frame size 18" X 21.5". Thank you for looking at our collection. The item "VINTAGE INCREDIBLE FINE MICRO GLASS MARBLES MOSAIC WALL ART TIGER PORTRAIT" is in sale since Thursday, February 9, 2017. This item is in the category "Art\Mixed Media Art & Collage Art". The seller is "gstamps" and is located in Rockville, Maryland. This item can be shipped worldwide.