300 Yuan Year of the Ox

China's large-format silver bullion issues of this period were produced at the Shanghai Mint, which had been substantially modernized in the 1990s specifically to handle proof strikes of this scale. The 1000g, 100mm format presents real technical challenges in achieving an even proof surface across the full die face — edge-to-center consistency is a known production difficulty at this size, and not all examples from this series emerged equally well from the press.