'Other' Constructional and Allied Systems Info & Downloads

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(Zet) Z-Op Construction Sets

(Zet) Z-Op was a wooden system for making buildings for young children. It was made in the Netherlands by OKWA. Dates unknown., but post war


Manufacturer / Distributor

OKWA, The Netherlands


Below there are various photos/manuals which can be downloaded by clicking on the appropriate image.


Photos of a Z-Op set
(Added 03/03/2022)

Photos of another Z-Op set
(Added 03/03/2022)

Photos of another Z-Op set
(Added 03/03/2022)