Interesting to read this, I wasn't aware of this 'Finnish' plan by the French government.
Actually, in late 1939 the French government offered all 50 FK-58's to the Dutch air force, this because production of the Morane 406 had been going so well that it would satisfy French fighter plane demands. The French FK-58's were equipped with a 980 hp Gnome & Rhone 40-N-39 engine and a three bladed Rainier propeller.
The twelve planes could be delivered to the Dutch in January 1940 and the rest could be delivered around April 1940. However, the Dutch government declined this offer - only too well aware of the FK-58's poor performance and the reliability issues of the French engines.
However, some weeks later they changed their mind (because of weapon embargo it was not possible to buy any planes from abroad anymore) and ordered 36 FK-58's at Koolhoven. As no engines were available for export these FK-58's would have been powered by using 760 hp Bristol Mercury VIII's from the Dutch reserve depot. Needless to say, with these engines the performance of the FK-58 would have been below any standard.
But because of the German invasion these plans never materialized.
I have read (just a one-source-story, not confirmed) about 1 FK-58 being shot down on the 10th of may somewhere above Holland; this however might have been one of the requisitioned planes of the Koohoven factory at Waalhaven airport.
