Haha, the prize is mine!
(Oh well, thanks to Duggy's clues and Google)

Never mind, everything is allowed to get a prize.

The answer is: the Lear Learstar

Kind regards,
Ikarushin

Well done mate, the prize is yours.
Link - http://homepage.ntlworld.com/m.zoeller/LTSRootntl2/Learstar.html



And the prize

Regards Duggy

This weeks headache.

Have fun ???

Looks like a Heinrich scout prototype (late 1917)

Wow, I thought it would be a tough one this week.
LINK -- https://en.wikipedia.org/wiki/Heinrich_Pursuit
And the prize.

This weeks headache

Hmmm, is it a CT-114 Tutor variant?

No although similar canopy.
First flight: May 25, 1964 ??

"powered by two 2,658 lbf (13 kN) thrust J85 turbojets, similar to those used in the F-5 Freedom Fighter"

Last clue