The Gupta era is a historical calendar era that begins from c. 318–319 CE. It was used by the Gupta emperors, as well as their vassals and their successors in present-day northern India and Nepal. It is identical to the Vallabhi era, which was used in the Saurashtra region of western India, although regional differences lead to a slightly different calculation for the conversion of Vallabhi era years to Common Era (CE).
The pillar in the name of Chandragupta II in the "year 61 following the era of the Guptas". Mathura Museum.
Chandragupta II, also known by his title Vikramaditya, as well as Chandragupta Vikramaditya, was the third ruler of the Gupta Empire in India. Modern scholars generally identify him with King Chandra of the Delhi iron pillar inscription.
An 8 gram gold coin featuring Chandragupta II astride a caparisoned horse with a bow in his left hand. The name Cha-gu-pta appears in the upper left quadrant.
The pillar inscribed with the Lakulisa Mathura Pillar Inscription, Mathura recording the installation of two Shiva Lingas by Udita Acharya in the "year 61 following the era of the Guptas in the reign of Chandragupta Vikramaditya, son of Samudragupta" (380 CE). Rangeshwar Temple. Mathura Museum. Mathura Museum.
Cave 6 and Cave 8 inscriptions at Udayagiri Caves mention the rule of Chandragupta II.
The iron pillar of Delhi, which features an inscription of king Chandra, identified as Chandragupta II. It was installed as a victory pillar in the Qutb complex by Sultan Iltutmish in the 13th century.