- yellow enameled gilt cross, two laurel wreaths, diagonal red-white-green ribbon with the Mexican eagle as suspender Institutional Service (45 years service) - red enameled gilt cross, two laurel wreaths, diagonal red-white-green ribbon with the Mexican eagle as suspender Extraordinary Service (40 years service) - white enameled gilt cross, two laurel wreaths, red ribbon with medium-narrow green-white center stripe, Mexican eagle as suspender Special Service (35 years service) - white enameled gilt cross, gilt laurel wreath, diagonal yellow above gray ribbon divided by narrow green-white-red stripes, Mexican eagle as suspender 1st Class (30 years service) - gilt cross with blue rims, laurel wreath, white ribbon with diagonal green-white-red center stripes, Mexican eagle as suspender 2nd Class (25 years service) - red enameled cross, laurel wreath, ribbon of three equal green-white-red stripes with the Mexican eagle as suspender 3rd Class (20 years service) - green enameled cross, laurel wreath, ribbon with five equal green-white-red-white-green stripes, 5-pointed star as a suspender 4th Class (15 years service) - white enameled cross, laurel wreath, white ribbon with medium width green (left) and red edges, 5-pointed star as suspender 5th Class (10 years service) - red enameled cross, silver laurel wreath, halved green (left) and red (right) ribbon with 5-pointed star as suspender Long Service Medal - Navy The Condecoración a la Perseverancia is granted to military personnel of the Navy for faithful, uninterrupted periods of military service to the country. Description: Basic form is a Maltese cross with two or three inner raised rims, resting on one or two circular wreaths of laurel, with a large round gilt central medallion bearing the number of years service surrounded by a white band inscribed Perseverancia above and the class of medal below. Suspended by a small replica of the Mexican eagle or a 5-pointed star from a ribbon colored according to class, with a gilt bar at top inscribed Mexico. Exceptional Service 1st Class (50 years service and beyond) - yellow enameled gilt cross, two laurel wreaths, diagonal red-white-green ribbon with the Mexican eagle as suspender Exceptional Service 2nd Class (45 years service) - red enameled gilt cross, two laurel wreaths, diagonal red-white-green ribbon with the Mexican eagle as suspender Exceptional Service 3rd Class (40 years service) - white enameled gilt cross, two laurel wreaths, red ribbon with medium-narrow green-white center stripe, Mexican eagle as suspender 1st Class (35 years service) - white enameled gilt cross,