10 Dollars - Charles III Tokyo

The geometry here is immediately suspicious to anyone who handles gold regularly: at 45 mm diameter and 0.31 grams, this is foil, not coin. These ultra-thin gold pieces — sometimes called "gold leaf coins" — emerged as a collector format in the 2010s, produced almost exclusively by BH Mayer's Kunstprägeanstalt in Munich under licensing arrangements with compliant Pacific island issuers whose nominal sovereignty provides the legal fiction of a circulation issue.

Solomon Islands has no meaningful connection to the Tokyo subject matter. The KM reference confirms this is a licensed product catalogued by Krause despite functioning entirely outside any monetary system.