This is a heavy and sturdy set, measuring 10-5/8″ x 10-1/4″ x 3/4″ in its cardboard sleeve.  This scan shows the cover; 20307558B shows the four maximum cards inside.  Similar in many ways to other large items from Guangdong Philatelic, this book-like item has 20 thick pages of mint stamp sheets, in all shapes and sizes, and an almost-first-day cover (with chop and stamp, but not together)–ending with two pages each holding two maximum cards.  Bilingual Chinese and English text.  Grade: 1