Shield: From the Provincial Seal of Isabela where the town is located.
1957: Year when Municipality was founded by virtue of Republic Act No. 2048.
Rising Sun: Hope for a bountiful harvest.
Blue: Loyalty of people to government.
Red: Bravery of people who rallied to change its name and bad image.
Yellow: Self-sufficiency among people of San Manuel.
Pair of Wings: Contribution of Municipality in development of the Nation.
Rice Stalks w/ 19 Grains: Primary source of income of town and number of Barangays.
Corn: Secondary product of the Municipality.
Green Field & Carabao: Vast agricultural land area of the town.