No member of the park and recreation board of any municipality, and no person who has been a member of such board within six months from the time of making of the sale, shall be directly or indirectly pecuniarily interested in the sale of any material or supplies of any kind or character for construction, betterment, or improvement in developing, beautifying or otherwise improving any park or other property by and through the agency of such board, or in the sale of any material or supplies to any contractor or subcontractor to be used on or in furtherance of work let by or through the agency of the park and recreation board, and no suit can or shall be maintained in any court by the seller or person claiming under or through the seller for the purchase price or value of material or supplies sold in violation of the provisions of this section. Such municipality may sue for and recover from the seller the amount of all money paid to the seller for material and supplies sold in violation of the provisions of this section.