The skin, hide, teeth, claws, or other parts of any bear lawfully taken and possessed for the period provided in Section 4757 may be tanned or utilized for personal use only. Notwithstanding the provisions of Section 4757, the skin, hide, teeth, claws, or other parts of any bear lawfully taken may be donated any time to veterans’ organizations or veterans’ service committees for use by veterans for rehabilitation purposes. The donor shall obtain a receipt which shall be retained during the period stipulated by Section 4757.