Section 2. A bond given by an administrator engaged in the administration of French spoliation awards shall contain a condition substantially as follows: “To administer according to law and the orders of the probate court all French spoliation awards which shall come to his possession as such administrator.” Such bond, when satisfactory to the judge or register, shall be approved in the following form: “Approved as adequate security for the legal disbursement of a French spoliation award of           dollars”, stating the amount appearing then to be receivable by the administrator from the United States treasury on account of such award or awards. Nothing herein contained shall be construed to impair the validity of any bond given prior to May second, nineteen hundred and two, or to affect the rules of administration and distribution of French spoliation awards theretofore established in the commonwealth.