Coins from Restoration (1057-1185)
After the Macedonian dynasty, the Empire fell into a period of difficulties due to an outdated military model relying on mercenaries, and a series of threats by new enemies. In southern Italy, the Normans conquered the Byzantine lands and established a Kingdom of Sicily in 1130. In Anatolia the Seljuq Turks advanced and dealt Emperor Romanos IV a crushing defeat in 1071, which enabled them to conquer all of Anatolia.

This complete fragmentation, however, was followed by the last strong Byzantine dynasty; the Komnenids. The five Komnenid Emperors presided over a sustained (but ultimately incomplete) restoration of the military, territory, economy, and political strength of the Byzantine Empire. It was during the Komnenid Emperor Alexios I that the First Crusade was initiated, and John II and Manual I played important parts during the Second Crusade.

After close to a century of rising fortunes, however, the Komnenid dynasty ended in a succession crisis and a popular revolt, after which a combination of gross incompetence and bitter infighting amongst the elite cause Byzantium to permanently lose financial and military supremacy.
Restoration (1057-1185)
An AE Follis struck 1068-1071 A.D. in Constantinople
Obverse: IC-XC - Bust of Christ facing with nimbate cross, pallium and colobium, and raising right hand in benediction, scroll in left hand.

Reverse: MP-OV - Facing bust of the Virgin Mary, nimbate and wearing pallium and maphorium.

Diameter: 27.4 mm
Die Orientation: 6 H
Weight: 6.39 g
Romanos IV, Class G Anonymous Follis overstruck on a Constantine X Follis.
SB 1854 (Constantine X).