Interesting properties about the design of the UK 50p piece [pdf]
By greengreengrass · 2026-10-24 · 2 points · 0 comments
https://cdn.ima.org.uk/wp/wp-content/uploads/2022/03/Westward-Ho-Conway-Concorde-and-curiously-curved-coins-from-MT-April-22.pdf
By greengreengrass · 2 points · 0 comments · on Hacker News, read on BetterNews.
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