Levi Brush  Vorgeschlagen von don108 
Adam Warren  Vorgeschlagen von NandeteShow 

Not a font, but I found this for you: http://www.dafont.com/movie-gallery.font

Look at number "3"

in case you need the actual "300" only you can download the logo free here:
http://www.brandsoftheworld.com/logo/300-frank-miller

This font is very similar

se for utilizar o numero 300 mesmo recomendo esta opção aqui http://www.dafont.com/movie-gallery.font

levi brush font