Gupta Dynasty, Skandagupta (455-467 AD), Gold Heavy Dinar, Archer type, Obv: king nimbate standing to left wearing long sash, holding an indian long bow in his left hand and arrow in his right hand, garuda standard behind right hand, under left arm brahmi legend 'Skanda', Rev: goddess lakshmi,  nimbate, seated on a lotus in padmasana holding cornucopia in right hand and lotus in the left, blurred brahmi legend at right "Sri Skandaguptah", navnidhi symbol at left, 9.1g, 19.11mm, (Variant of Altekar, Bayana Hoard # Pl. XIX -5), about fine, Rare.

There is no tamgha in left field, its a conch shell  and cluster of nine dots which are called Nav Nidhi symbol.