Provided, That when the place of the commencement of succession is overseas, the inheritance tax shall be levied by the head of a tax office, etc. having jurisdiction over the location of the property which is within the territory of Korea, and in case where the inherited property is within the jurisdictional areas of the heads of two or more tax offices, etc., the inheritance tax shall be levied by the head of tax office, etc. having jurisdiction over the location of the main property.