Typesetting handwritten "n/a" symbol

On the beautiful suggestion of the user @Marijn use the command \reflectbox to mirror the request symbol. Obviously you won't have the effect you should since your image refers to an old manuscript. May I suggest to use the Zapfino font package using fontspec pakage and compiling with XeLaTeX or LuaLaTeX. Here there is a MWE with Zapfino font:

\documentclass[12pt]{article}
\usepackage{fontspec}
\setmainfont{Zapfino}
\begin{document}
.............
\end{document}

Here there is a simple version that you can compile with pdflatex. You to have low quote could to use \usepackage[ngerman]{babel} with the reflect symbol \nglqq instead of the standard low quote \glqq.

    \documentclass[a4paper,12pt]{article}
    \usepackage[ngerman]{babel}
    \usepackage[utf8]{inputenc}
    \usepackage{graphicx}
    \newcommand{\nglqq}{\reflectbox{\glqq}}
    \begin{document}
    \begin{tabular}{r r r r r}
    Søborg: 15 Gaarde à & 6 Td. & 4 Sk. & \glqq  Fdk. & \nglqq  Alb. \\
        foruden Præstegaardens & 10 --- & 5 --- & \nglqq  --- & 2 --- \\
        og Kongens Kirkejord & 3 --- & 1 --- & \glqq  --- & \glqq --- \\
        \end{tabular}
   \end{document}