Shield: From the Provincial Seal of Marinduque where the town is located.

Two Coconut Trees: Major agricultural product.

Navy Blue Color & Fishes: Rich fishing ground at Tayabas Bay as a means of livelihood of inhabitants.

Bolo, Spear & Cattle Head: Victory of natives over the superior Americans in Battle of Pulang Lupa on September 13, 1900. Cattle head as major industry of early settlers.

1880: Year when Municipality was founded per Real Orden 469 dated May 25, 1880.