DOW 58 – 5c, for No4 Mk1 and Mk2, Sth Africa, made in 1958. DOW is a PH5c made under license in Sth Africa by Delphos Ordnance Works, and is externally the same. The cross section of some top arms are different from the PH5c, so some parts do not interchange. Status; Good sight, similar value and performance to the PH5c.