5c. Health tax, Ley 4039, block of 25 revenue stamps, proof in blue color printed on thick paper with glazed front, VF and rare! (Image)

5c. Health tax, Ley 4039, block of 12 revenue stamps, proof in blue color printed on thick paper with glazed front, VF quality, rare! (Image)

5c. Health tax, Ley 4039, sheet with 2 groups of 3 revenue stamps, proof in blue color printed on thick paper with glazed front, VF quality, rare! (Image)

5c. Health tax, Ley 4039, blocks of 50 revenue stamps, 11 proofs in different colors printed on card (some opaque, most with glazed front, and one on thick paper with glazed front), VF quality, very rare group! (Image)