Where can platinum be sold?

Good day, could you please elaborate on the various avenues available for selling platinum? Are there any specific markets, exchanges, or platforms that are known to be reputable for trading this precious metal? Additionally, are there any considerations I should keep in mind when choosing a venue to sell my platinum, such as fees, security, or liquidity? I'm particularly interested in understanding the global reach of these options and how they might differ in terms of accessibility and convenience for international sellers. Thank you for your assistance.