It’s probably common knowledge but for those who don’t know the age of their M-camera, like me, but want to know, like me, you can drop to your knees and thank God for internet 😉 Of course, God had nothing to do with it, as with everything else, however…
Anyway, I came across the following site which tells you by the serial number of your camera from which year it dates, and how many were produced in that specific batch. I learned that my camera was built on the 11th of July 1994. I finally have a camera which is actually younger than me ❤.
LINK TO VERY INFORMATIVE WEBSITE
Anyway, that was it! I finally finished a big assignment so expect some new things soon!
Photography Contrastique - Alternative Photographic Processes 
http://www.summilux.net/numeros/ has also a very useful database…
Thank you for that link too! Indeed quite handy, too bad it’s in French. Not so much for me but for other international users.