Opinion by
Tilson, J.From the record it was found that certain of the hemmed mufflers in question were imported prior to the effective date of the trade agreement with the United Kingdom (T. D. 49753). These were accordingly held dutiable at 60 percent under paragraph 1209. The hemmed mufflers imported subsequent to the trade agreement (T. D. 49753) were held dutiable at 45 percent under paragraph 1209 and (T. D. 49753) as claimed. Protests sustained in part.