9801.00.25.00—Articles, previously imported, with respect to which the duty was paid upon such previous importation if (1) exported within three years after the date of such previous importation, (2) reimported without having been advanced in value or improved in condition by any process of manufacture or other means while abroad, (3) reimported for the reason that such articles do not conform to sample or specifications, and (4) reimported by or for the account of the person who imported them into, and exported them from, the United States