This font contains a bunch of useful ligatures, and by typing 'N', 'r' and period plus activating the discretionary ligatures you get an oldstyle numbersign. As usual in my blackletter fonts, the # key is occupied by the round s.
Font Family: Emilia Gotisch
Tags: blackletter, fraktur, german, gothic, gotisch, great x-height, long s, medieval, vintage, weiss