1000 Tenge Mercury

Kazakhstan's choice of tantalum for this issue is technically ambitious — the metal is notoriously difficult to strike, with a hardness and refractory character that demands tooling far beyond what standard precious-metal dies can sustain. Very few world mints have worked with it successfully, and the rejection rates during production tend to be punishing.

Mercury himself is an odd patron for a Central Asian issuer, though Kazakhstan has leaned into classical mythology for its collector series since the early 2010s, treating the Roman pantheon as internationally legible rather than culturally foreign.