Hi Dan

Two pics of KZ-4 from Roskilde Airshow 2009 (23 Aug 2009)
as well as the 2006 poststamp depicting the same KZ-4.
Only two KZ-4 (some will argue three) were ever built.


Two links on KZ airplanes:


http://www.kz-fly.dk/index.html

and

http://www.veteranflyklubben.dk


Kind regards, Erik M R