Commemorative Cross of the 1916–1918 War exterior and 7 mm on the interior. In the center of the cross, there is a 13 mm circle. The external borders of the cross and the circle have 1.3 mm. Inside the circle, on the obverse, there is the royal cypher of King Ferdinand I of Romania (two "F"s facing away with a royal crown on top), while on the reverse there is inscribed "1916"|"1918" on the early models and "1916"|"1919" on later models, in two rows. The 30 mm ribbon alternates four equal bars of dark blue with three equal bars of green. Seventeen clasps were approved for
Service ribbon Service ribbon A service ribbon, medal ribbon, or ribbon bar is a small ribbon, mounted on a small metal bar equipped with an attaching device, which is generally issued for wear in place of a medal when it is not appropriate to wear the actual medal. Each country's government has its own rules on what ribbons can be worn in what circumstances, and in which order. This is usually defined in an official document and is called "the order of precedence" or "the order of wearing". In some countries (particularly in North America and Israel), some awards are "ribbon only",