I have just noticed that a seller on Ebay has recently started listing a whole bunch of original patent reprints. They are like remastered versions of the drawings for a whole variety of armor piercing shells and bullets. If you type “armor piercing” in quotations in the Ebay search you’ll see them all. Are these things anything at all, or just typical reprints of common things?
Google Patents search + PhotoShop + parchment paper + inkjet printer