The production procedures of stamped without coloring pins are very close to cloisonné pins & enamel pins, just no color filled. Although there is no color infill, these die struck pins are cut out and plated in your desired metal and finish. Raised metal is polished to have bright distinguished look, recessed metal has texture background, sandblasting or foggy painting to have matt finish looking. For the classic, timeless look in a high quality pins, stamped without coloring lapel pins are the perfect choice. Iron pins are the cheapest and best option for non-profit promotional campaigns or events.