Republic documentary tax stamps 4

10 sentimos red orange

20 sentimos deep yellow

These were also issued from 1971 to 1987 but the design has no "branches" flanking the Republic seal.

Republic documentary tax stamps 3

4 centavos orange w/o security fibers

50 centavos w/security fibers

1 peso dark red w/security fibers

2 pesos w/security fibers

5 pesos green w/security fibers

The 4c comes from the 1963-67 issues and those printed on security paper with artificial fibers are from the 1967-71 issues.

"Bamboos" design at left and right.

[added later]

Republic documentary tax stamps 1

2 sentimos orange



 

50 sentimos blue

 

1 piso sepia

 

These documentary stamps were issued from 1971 to 1987 on security paper with artificial silk fibers. Rouletted, not imperforate.

"Branches" design flank the Republic seal.

Science Stamp horizontal

silk paper

silk paper

silk paper

silk paper

silk paper

You can read about Science Stamp taxes in Republic Act No. 5448.

Section 1 of this act is as follows:

"Section 1. Creation of Special Science Fund. There is hereby created a Special Science Fund, hereafter referred to as the Fund, to be constituted from the proceeds of the taxes imposed in Sections three and four of this Act to promote scientific and technological research and development, foster invention, and utilize scientific knowledge as an effective instrument for the promotion of national progress. This Fund shall be expended exclusively for the programs, projects and activities of the National Science Development Board, Philippine Atomic Energy Commission, National Institute of Science and Technology, Philippine Coconut Research Council of the Philippines, and the Science Foundation of the Philippines authorized under their respective charters or laws of their creation, including colleges and units of the University of the Philippines and bureaus of the Department of Agriculture and Natural Resources involved in scientific and technological research and development, and for the expenses of science agencies to carry out their functions, duties and responsibilities, as well as the undertaking of legislative studies and observation on incentive policies and the funding schemes of scientific and technological bodies abroad."

Science Stamp vertical

ordinary paper

silk paper

 

ordinary paper

silk paper

silk paper

silk paper

A used Science Stamp was cancelled either by pen, hole punch, or handstamp.

Science Stamps were issued in the 1960s and 1970s.

These are kept by collectors of revenue stamps.