The concept is deeply tied to the history of real-world Pin-Up models . These were physical photos or illustrations meant to be torn out and literally "pinned up" on a wall. The Golden and Silver Age
: Famous creators drawing a character they don't normally work on. 🕰️ Origins and Evolution Pin-Ups.cbr
: Highly detailed, non-sequential art used to sell multiple covers of the exact same issue. The concept is deeply tied to the history