In the valuable list of Corinthian vase-inscriptions compiled in Chapter XI of Necrocorinthia, Payne made the following observations on the iota: ‘Iota is usually Σ; on late vases a simplified form is also found, but the old form persists even in the second half of the sixth century (A.D. i, pl. 7, 25; ii, pl. 24, 9; pl. 39, 12, & c). A further simplification, I, occurs on a few middle and late vases (nos. 17, 49, 50, 57 (?), 68, 70); this form is used on the Corinthian revetments from Calydon (Poulsen-Rhomaios, pls. 28–9), on the Corinthian Treasury at Delphi, and on a bronze weight of very archaic appearance, found in Attica (Journ. Int. Arch. Num. 1905, 5 ff; obv., bull's head, frontally, and ΓΒΝΓΤΑΙΟΝ rev., ); the weight may, however, be later than it looks… In the late sixth century the straight iota becomes commoner; it is the regular form from the fifth century onwards.’