1878 China 1st Customs Dragon Issue Stamps Marking the genesis of modern postal service in China, these historic Large Dragon stamps represent a pivotal moment in philatelic history. Issued on May 1, 1878, when the Imperial Marine Customs Post opened to public use, this inaugural series comprises three denominations—1, 3, and 5 candarins—establishing the foundation for China's postal infrastructure. Each stamp exemplifies the craftsmanship and significance of early Chinese philately, making them essential acquisitions for serious collectors and historians of Asian postal systems.