Magnificent Weaponry and Armoury Set from the Warring States Period

This 12-piece weaponry and armoury set is from the Warring States period as per the knowledge of my Chinese colleague. They are between 4" to about 7.5" in height and are painted with red patches on certain pieces. Indeed a very rare collection of a complete set. According to a Chinese colleague (who has worked as a curator in a Museum) only 3 pieces of these 12 piece collection are available in one of the major Chinese Museum