Oyster Shell Elephants Family of 4 Elephant Figuri

Group of 4 elephant figurines, made of oyster shell. These 4 are various shades of gray with some yellowish coloring. The 3 smaller elephants are probably 1 set and the larger elephant is a single, but they look really good together as a family of 4, so that s how they re being sold. None of these figurines have any sort of markings to indicate maker or age. The largest elephant measures 8 1/4 tall, 9 long. His eyes look different from the smaller 3 figures.The 3 smaller elephants measure 3 3/4 to 4 3/4 tall. One of the smaller elephants has the tip of his right tusk broken off. No other damage to any of the other pieces.