“U.S. No. 2” consists of potatoes which meet the following requirements:
Similar varietal characteristics, except when designated as a mixed or specialty pack;
Not seriously misshapen;
Free from:
Freezing;
Blackheart;
Late blight, southern bacterial wilt and ring rot; and,
Soft rot and wet breakdown.
Free from serious damage by any other cause. See §§ 51.1564 and 51.1565.
Size. Not less than 11/2 inches in diameter, unless otherwise specified in connection with the grade.
For tolerances see § 51.1546.