As BMW's flagship grand tourer, each 503 was essentially hand-built by skilled craftsmen. This artisanal process, combined with its high price, meant only 413 units were ever produced, making it an incredibly rare and sought-after classic today. By nakhon100 - BMW 503 Coupé, CC BY 2.0, https://commons.wikimedia.org/w/index.php?curid=37762518