Issued by Mexico in 1974, this $2 airmail stamp commemorates the Primer Congreso Internacional de Comunicaciones, highlighting advances in electrical and electronic communication technologies. The bold design features stylized red signal arrows moving across a blue field, symbolizing the transmission of electronic data. On the right is an emblematic telecommunications motif, while the left side displays a modernist $2 value panel. Designed by A. Brisha, the stamp reflects Mexico’s growing role in global communications during the 1970s and is a desirable thematic piece for collectors of technology, engineering, and airmail issues.