Rubber stamp in blue and black ink: "PAZ" covered by speech bubble design with cross inside. Rubber stamps in black ink: oval seal with flowers and "PRIMER DEA EMISION / 21.09.79 / FIRST DAY COVER", winged creature design, circular design with butterfly and cross, and sender's return address with name "G.E. MARX VIGO". Letterpress text: "PRIMAVERA SUB-TERRANEA * PRIMER DIA EMISION / UNDER-GROUDN SPRINGTIME * FIRST DAY COVER", and "21.09.1979". "102" stenciled on reverse in black ink. Sheet of 3 artist stamps enclosed. Green floral background, one letter of "PAZ" on each stamp in red ink, covered by speech bubble design with cross in black ink. Sheet of 4 artist stamps enclosed. Green floral background with "PAZ" and winged creatured design in red ink, covered by speech bubble design with cross in black ink, distributed unevenly across 2x2 grid of stamps.