1540 FRIENDSHIP, ETC., TREATY-POLAND. JUNE 15, 1931. that certification by a Chamber of Commerce or similar organi- zation has not been obtained shall not be considered by such consular officer as of itself sufficient ground for refusing to authen- ticate the document. (b) If at the time the certificate of origin is made out circum- stances render it difficult or inconvenient for shippers to specify on such certificate the name of the vessel on which the goods are to be shipped, the necessities and convenience of shippers shall be taken into account either by waiving this requirement or by mak~ng such other provision as the circumstances of the case reqUire. (c) In exceptional cases in which doubt exists regarding the exact proportion of the value of any given article represented by the costs of the labor and raw material of the United States, or in which such proportion is less than fifty per centum, but the article, in view of the nature and extent of the processes to which it has been subjected, is distinctly an American product, no certi- fication regarding such proportion on a certificate of origin shall be required. Any article in which the raw material or the labor of the United States represents less than fifty per centum of the total value shall, nevertheless, be deemed to be a product of the United States if a like article from any third country representing less than fifty per centum in value the labor and raw material of such third country is deemed to be a product of that country. '\ (4) In the event that modification of the requirements outlined in the preceding paragraphs is at any time considered desirable from the viewpoint of either Party, it is agreed that its proposais to this end shall be given sympathetic consideration by the other Party. Accept, Sir, the renewed assurances of my highest consideration. THE HONORABLE HENRY L. STIMSON, Secretary of State. TYTUS FILIPOWICZ
