A classic decimal-era definitive from the United Kingdom Machin series, featuring Arnold Machin’s iconic sculpted profile of Queen Elizabeth II. Printed in a fresh light green shade, the 6p value served everyday inland postal rates during the early 1970s period. The clean minimalist design and solid colour background highlight the elegant cameo portrait, making it one of the most recognizable British definitives. A staple for Machin specialists, shade collectors, and decimal postal history enthusiasts. Excellent for plating, perforation, and phosphor band studies.