China
People's Republic platinum Proof 100 Yuan 1992, Inventions & Discoveries Series I, Bronze Age Metal Working, KM419, Proof 69 Ultra Cameo NGC. Another of the rare series with a mintage of 100 pieces. The fields are deeply mirrored and superbly reflective. The fields are free of all significant flaws and the frosted devices provide extreme cameo contrast.
Estimate: 15000-20000 USD