This item is an injection-plastic jet aircraft model kit. 58 parts.
Limited Edition set of two 1/72-scale model kits of the OA-4M Sky Hawk from Hasegawa.
From the official Hasegawa website -
"The US Marine Corps counts on Headquarters and Maintenance Squadrons like H&MS-12 and H&MS-13 to provide Close Air Support (CAS) during combat missions. Expertly trained pilots, known as Forward Air Controllers, make sure that the squadron hits only its intended target. During the late 1980s, the USMC flew specially modified OA-4M Skyhawks to carry out these dangerous missions."
Total model length is 179mm, wing span is 117mm. Each kit has 58 parts.
