In 1589 it was introduced into Russia, when the tsar Theodore erected the Russian patriarchate and bestowed on the new patriarch the right to wear the mitre, sakkos and mandyas, all borrowed from the Greek rite.
The Greeks and Greek Melchite metropolitans now wear the sakkos instead of the phelonion; and in the Russian, Ruthenian, Bulgarian and Italo-Greek churches this vestment has superseded the phelonion in the case of all bishops (see Dalmatic and Vestments).
In the Eastern churches the only vestment that has any true analogy with the dalmatic or liturgical upper tunic is the sakkos, the tunic worn by deacons and subdeacons over their everyday clothes being the equivalent of the Western alb.
The sakkos, which, as a liturgical vestment, first appears in the 12th century as peculiar to patriarchs, is now a scapular-like robe very similar to the modern dalmatic (see fig.
Its origin is almost certainly the richly embroidered dalmatic that formed part of the consular insignia, which under the name of sakkos became a robe of state special to the emperors.
- GREEK SAKKOS, OF RED SATIN EMBROIDERED WITH SILVER-Gilt And Silver Thread WITH SILK.