Set of 8 lobby cards or more precisely "stills", as they are referred to in the advertising press sheet as well as on the outer envelope. In the US, lobby cards are printed in colours and have a size of 14" x 11". Smaller black and white 10" x 8" lobby cards such as this set are known as "stills". Each card has a "DD" reference number on the front.
24.9 x 20.6 cm
From my personal collection.
(Click on the pictures to review them in their native resolution.)
To quote this article
Danny Duchesneau@2021, "Dawn of the Dead Lobby Cards issued in the US by distributor United Film Distribution Company in 1979", Dawn of the Dead Collector's Blog, published on 2 January 2022.