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.