This is a Spitfire Mk. Vc Trop of the Royal Hellenic Air Force in the post-war natural metal finish. Hard to resist a NMF Spitfire!
More completed Airfix Spitfires here: https://inchhighguy.wordpress.com/2021/05/27/airfix-supermarine-spitfire-mk-vc-trop-of-sgt-george-beurling-in-1-72-scale/