Buttons for a junior high school student's詰襟 (high-collared) school uniform jacket. Front large buttons: 21mm, 5 pieces Front inner buttons: 11mm, 5 pieces Sleeve small buttons: 14mm, 4 pieces I think these are unused, so I'll consider them to be in near-new condition. I believe these buttons came with the standard 詰襟 uniform when I bought it, and they were for junior high and high school uniforms.