I recently purchased a translucent amber handled Schick that came with a matching injector cartridge with about 10 of the original 20 blades in it.
How can I date these blades? The blade cartridge has these markings:
B47 PAT. 1969945 Made in USA
No holes in the blades, they are solid. Would like to try one--just don't have any idea what they're made of or how ancient they are.