\documentclass[tikz,border=0pt]{standalone}
\usepackage[T1]{fontenc}
\usepackage{lmodern}
\begin{document}
\begin{tikzpicture}[x=1bp,y=1bp]
\fill[gray!8] (0,0) rectangle (268,326);
\draw[gray!55,dashed,line width=1bp] (1,1) rectangle (267,325);
\node[align=center,text=gray!75,font=\sffamily\fontsize{24}{30}\selectfont] at (134,180) {Portrait\\omitted};
\node[align=center,text=gray!75,font=\sffamily\fontsize{14}{18}\selectfont] at (134,110) {Alexander\\Grothendieck};
\end{tikzpicture}
\end{document}