The design of the official seal of the Municipality of Loon was based on Resolution No. 99-093, Series of 1999, authored by Vice Mayor Raul P. Barbarona and entitled "A Resolution Authorizing the Conduct of a Contest to Design the Official Seal of the Municipality of Loon and Inviting Interested Loonanons to Participate in the Said Contest". The winning seal, which was designed by Reigh P. Monreal, embodies the ideals, dreams and aspirations of the Loonanons and portray their collective history, culture and achievements