Set of 4 HTF Vintage EARLY WORLD WAR I AIR PLANE Ceramic Mugs made in JAPAN

Vintage hard to find set of 4 EARLY WORLD WAR I AIR PLANE Ceramic Mug made in JAPAN. Mugs are 5 3/4” tall x 3” wide at the rim and hold almost 15oz liquid. There are 3 different kinds of planes. Mugs are in great condition no chips or cracks noted but 2 mugs have some ceramic globs on the handle but they were made like that (see pictures). Mugs are in very good condition! Thanks for looking! 😊 Unable to bundle because These are heavy! 😊 UBE-kk