During the entire Gupta Dynasty coinage, the only denomination used for Gold coins was the full Dinar, modeled after the Roman Denarii, following the Kushan example.
In addition to full dianars - there one other specimen of a Half Dinar of CII in the Shivlee Collection and it is the only one known to exist in a private collection.
One other specimen was listed in 1957 as part of the Gupta coin collection in the Prince of Wales Museum, Bombay.
The Kushan dynasty did issue fractional dinars but no other fractional dinars are known to exist from the Gupta Dynasty other than this one speciman. It may be that this one speciman may be part of a series of 'experiment' coins that may not have been accepted by the populace.