10 Dollars Howler monkey

Belize issued a series of silver conservation coins through the 1970s–90s in partnership with the WWF and related wildlife programs, with the howler monkey pieces tied directly to efforts to document and protect primate populations in the Cockscomb Basin. The black howler monkey — found almost nowhere outside Belize and a small adjoining region of Guatemala — was already the subject of the world's first jaguar preserve established in 1986, a designation that incidentally protected howler habitat as well.

KM#125 is one of the later strikes in this conservation series, by which point mintages had declined sharply from the earlier issues.