Free Critical Mass inside

Yesterday I received in this forum my first giveaway, courtesy of Belfour, so I would like to contribute myself to the forum too.

I have a Critical Mass key, that I will give to the one that is able to guess which is the first letter of my mother's birthplace.

Don't lose time googling or thinking in puzzles; just guess.

You can post once indicating 3 guesses, i.e. 3 letters, case insensitive.

I'll check in some minutes the thread; the first one that made the correct guess will get the key.

If nobody makes the correct guess before I check the thread, then I'll make a standard random giveaway.

Luck.

PS if this is against some rule of the forum, please tell me.

EDIT: Noctis149 is the winner, delivering in process...

EDIT2: Delivered!