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We found this poster at IKEA, EDELVIK Poster 103.776.29.
Allposters.com has another poster, which includes the same aircraft, but 2 in formation, possibly the same original photo/artist?
That is a North American T-28 Trojan, a postwar era military aircraft used for basic flight training an the Navy and Marine Corps.
They still remain popular with warbird collectors and enthusiasts.
Required, but never shown