The first piece is an ancient bronze ring, featuring a 3-D bird. The ring has some greenish patina and corrosion, which are consistent with aged bronze. The ring is most likely roman, with the bird being a votive or symbolic piece. The second object is an ancient cloak pin depicting a llama on top. The final object is also a cloak pin with what looks to be a stylized figure on top.
 
The cloak pins look to be previously cleaned with a chemical that caused an almost crystallization appearance. 
 
Dimensions: 1. 3/4" X 1 1/4"  2. 5 1/4"  3. 4 1/4"