It is published too in Nomismatika Chronika 14 (year 1995).
There page 74.
The author assumes that they are related to
Christodoulos, which is nonsense, they are just Greek replicas from modern hand cut dies and much younger than
Christodoulos.
Page 73 "..it would seem save to accept the trade´s conformation that the "tourist
fakes" of this firm were struck from dies they
had purchased from
Christodoulos at some time just before the war."
Christodoulos is famous and so everything related to him is more interesting and expensive than just Greek replicas from unkown maker.