U.S. No. 2.

“U.S. No. 2” consists of potatoes which meet the following requirements: (a) Similar varietal characteristics, except when designated as a mixed or specialty pack; (b) Not seriously misshapen; (c) Free from: (1) Freezing; (2) Blackheart; (3) Late blight, southern bacterial wilt and ring rot; and, (4) Soft rot and wet breakdown. (d) Free from serious damage by any other cause. See §§ 51.1564 and 51.1565. (e) Size. Not less than 1 1/2 inches in diameter, unless otherwise specified in connection with the grade. (f) For tolerances see § 51.1546. [35 FR 18258, Dec. 1, 1970, as amended at 76 FR 31789, June 2, 2011]