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human
[Marvel] If Magneto being their father is/becomes canon (again), how old are the Maximoff twins?

I know that Erik being their father has been retconned, but let's just ASSUME that he is actually their biological father. Erik was a teenage/pre-teen during the Holocaust. 

If this is the case, shouldn't the twins be somewhere in their sixties or fifties at their youngest (comic-book time, be damned). Although, since they are mutants and due to the nature of their powers, they are far less likely to look their age.
gpt
It's been established that Magneto was born in 1925 or 1926, but that doesn't matter; ordinary human men can remain fertile into their eighties, so they could be almost any age.

On the other hand, his wife Magda was a human woman - unlikely to be having twins past her 40s. Like him she was a holocaust survivor, so probably born no later than 1940. They courted, married, had a child (Anya), watched her grow up a bit - and then she died in a fire, by which time Magda was already pregnant with the Maximoffs. This probably happened no later than the 1980s.

It's also worth considering that in their early appearances the twins were implied to be about the same age as the original X-Men, and more recently it's been all but stated that Jean Grey and Wanda Maximoff were of an age. If Jean were alive today she'd be in her early to mid 30s, so Wanda and Pietro are probably the same.