Caligula - Quadrans money reform (JUL2172)
Augustus - Dupondius DIVUS AUGUSTUS struck under Caligula (N2147)

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Gaius (Caligula). AD 37-41. Æ Quadrans (16 mm, 1,94 gm). Rome mint. Struck AD 40-41. Pileus between S C / Legend around RCC. RIC I 52. VF, This series of quadrantes commemorated the abolition of 0.5% tax remaining from an original 1% tax created by Augustus. The first half was removed by Tiberius. RCC stands for remissa ducentesima, or “removal of 1/200” [tax]. The removal of this burden on the people is symbolized by the pileus (cap of freedom).