7 CFR §51.1549

1. (a)The following definitions provide a basis for describing lots of potatoes as to the degree of skinning whenever description may be appropriate:
   1. (1)“Practically no skinning” means that not more than 5 percent of the potatoes in the lot have more than one-tenth of the skin missing or “feathered”;
   2. (2)“Slightly skinned” means that not more than 10 percent of the potatoes in the lot have more than one-fourth of the skin missing or “feathered”;
   3. (3)“Moderately skinned” means that not more than 10 percent of the potatoes in the lot have more than one-half of the skin missing or “feathered”; and
   4. (4)“Badly skinned” means that more than 10 percent of the potatoes in the lot have more than one-half of the skin missing or “feathered”.