The Curtiss P-6 Hawk is an American single-engine biplane fighter introduced into service in the late 1920s with the United States Army Air Corps and operated until the late 1930s prior to the outbreak of World War II.
LÉ Aisling of the Irish Naval Service, now known as Al-Karama of the Libyan National Army, was built as a patrol vessel in Verolme Dockyard, Cork, Ireland in 1979.
The Piaggio P.23M was an Italian commercial transport aircraft prototype designed and built by Piaggio.
The Piaggio P.23R, also known as the Piaggio P.123 for propaganda purposes, was an Italian commercial transport aircraft prototype designed and built by Piaggio.
Prostaglandin E synthase 3 (cytosolic) is an enzyme that in humans is encoded by the PTGES3 gene.
The PZL.23 Karaś (crucian carp) was a Polish light bomber and reconnaissance aircraft designed in the early 1930s by PZL in Warsaw.