Here are two more examples from Ireland's 2002-4 euro-denominated "Birds" series. The postal rates were changing quickly, so the same images were used for incrementally higher valued stamps. Both of these examples are self-adhesive coil stamps from vertically-oriented rolls and they are "se-tenant" with another stamp of the same value (not shown here).
The 38c goldcrest stamp (Sc.#1372) was issued on January 1, 2002 with many other of the sheet, booklet and coil stamps as the first installment of the "Birds" series. It is printed on a shiny paper, and the black lettering is solid. The 41c goldcrest stamp (SC #1396) was issued in March of 2002. The paper of this stamp stamp has a dull finish, and the black lettering is screened. Both of these stamps are offset printed.
The "N" (domestic rate) peregrine falcon stamp (Sc. #1494) was issued on August 25, 2003. The image is done with fine halftone screens, so that details of the bird can be plainly seen under 10x magnification. The black lettering is solid.
The 48c peregrine falcon stamp (Sc. # 1514) was issued on September 30, 2003. This stamp was printed with coarser halftone screens, so that details are not so clear under 10x magnification. The black lettering is screened on this stamp. Both of the stamps are offset printed.