The trademark registration number starts with G, indicating that the trademark is an international trademark.
For example, the G Mark Award is an excellent design award issued by the Japanese government to Japanese manufacturers (GoodDesignAwards, because the award emblem is a deformed G character, also known as the G Mark Award). The award has a history of more than 50 years and its purpose is to "select and recognize outstanding design in order to improve the quality of life, enhance industrial research capabilities and expand export and trade volumes".