Ok, ur mum is 75. Average age women became pregnant in Switzerland is 30.20.
Which makes you 45 yrs old.
So 1973 it is ; )
Haha! Classic. I was actually born in South Africa...

; ))
well.. imo guessing is useless. But reading all ur posts and trying to find info on the web and making some educated guess.. pretty useless also, but statistically is much more "lucky" ; )