Bulgaria, Order of Cyril and Methodius, 1st class, with original case of issue, circa 1970s.
The medallion is in gilded brass and "hot-baked" enamel; measures 36.2 mm wide. The artwork is in high 3-d profile. The pentagonal aluminum suspension device is of Soviet style.
The case is of nice quality, with the national emblem of the Bulgarian People's Republic and the name / class of the decoration impressed in gold on the cover. Both the award and box are in excellent condition.
The order was established in 1950 in three classes and awarded starting from 1951. It was bestowed for major contribution to science, education and culture.