U.S. No. 1 are pears that are mature but not overripe, carefully picked, clean, fairly well formed, free from decay, internal breakdown, scald, freezing injury, worm holes, black end; and free from damage caused by hard end, bruises, broken skins, russeting, limb rubs, hail, scars, cork spot, drought spot, sunburn, sprayburn, stings or other insect injury, disease, or damage from mechanical or other means.