According to hellenicaworld.com, in 1968 a company named Bioplastic A.E. adopted the Attica 200 design to develop a light three-wheeler truck which they named Delta - it used the the rear section of the Attica for the front half of the Delta.
An advertisement from 1968 shows "Delta Dimitriadi", and also ΒΙΟΠΛΑΣΤΙΚΗ Α.Ε. (Bioplastic A.E.)
Sources: hellenicaworld.com, period advertising.
