“U.S. No. 2” consists of grapefruit which meet the following requirements:
    
    
    
        
        (1) 
         Discoloration: Not more than one-half of the surface, in the aggregate, may be affected by discoloration. (See  § 51.770.);
     
    
    
    
        
        (4) 
         Similar varietal characteristics;
     
    
    
        
        (6) 
         Not more than slightly misshapen; and,
     
    
        
        (7) 
         Not more than slightly rough texture.
     
    
    
    
        
        (2) 
         Unhealed skin breaks; and,
     
    
    
        
        (c) 
         Free from serious damage caused by:
     
    
    
    
    
    
        
        (5) 
         Dirt or other foreign material;
     
    
    
        
        (7) 
         Dryness or mushy condition;
     
    
    
    
    
    
    
    
    
    
    
    
    
        
        (19) 
         Thorn scratches; and,
     
    
    
        
        (d) 
         For tolerances see  § 51.760.