\documentclass[12pt,a4paper,oneside]{letter}
\usepackage{palatino,graphicx}
\pagestyle{empty}

\parindent=0pt
\parskip=0pt
\hoffset=-1.7cm
\voffset=-40mm
\textwidth=160mm
\textheight=25cm
\newcommand{\leadingzero}[1]{\ifnum #1<10 0\the#1\else\the#1\fi} 
\begin{document}
\begin{minipage}{37mm}%
    \raisebox{-7mm}[0.mm][0.mm]
    {\includegraphics[width=33mm]{uni-logo}}
\end{minipage}
\vbox{\hspace{1.2mm}%align with minipage below
\begin{minipage}{130mm}%
    {\LARGE Ruprecht-Karls-Universit\"at Heidelberg}\\[2mm]
    {\Large Physikalisches Institut}\\
    \underline{\hspace{130mm}}
\end{minipage}\\[4mm]
\mbox{
\begin{minipage}[t]{66mm}
    Dr. Jorge Mercado
\end{minipage}
\begin{minipage}[t]{68mm}
      {\small
      Im Neuenheimer Feld 226\\
      69120 Heidelberg\\
      Telefon (06221) 54-19508\\
%      Telefax (06221) 47-5733\\
      E-Mail: \\
      mercado@physi.uni-heidelberg.de\\[20mm]
      }
     \leadingzero{\day}.\leadingzero{\month}.\the\year
\end{minipage}
}%mbox
}%vbox

\vspace{-31mm}
\underline{\quad{\scriptsize Physikalisches Institut $\cdot$
           Im Neuenheimer Feld 226 $\cdot$ 69120 Heidelberg}\quad}\
\medskip
{\obeylines
MSC Vertriebs GmbH
{\bf z.Hd. Frau Nadine Merkle}
Industriestr. 16
D-76297 Stutensee (Sp\"ock)
Tel. 07249/910-4581
}%obeylines

\vspace{10mm}
{\Large{\bf Delivery note / Lieferschein}} \\[1ex]
\underline{
Defective readout boards ({\bf RMA-Nr. 300025339})}

\vspace{10mm}
%The following items have been delivered to MSC
Item\hfill Quantity
\vspace{2ex}
\begin{itemize}
\item ROBs type T1A \hfill {\bf2 pcs.}\\
of Delivery 81441652
\item ROBs type T1A \hfill {\bf3 pcs.}\\
of Delivery 81440780
\item ROBs type T2B \hfill {\bf1 pcs.}\\
of Delivery 81441147
\item ROBs type T1B \hfill {\bf1 pcs.}\\
of Delivery 81441652
\end{itemize}

\vfill
\begin{flushright}
\noindent\rule[-1ex]{6cm}{0.8pt}\\[1ex]
SENT.~~ Date, signature.
%DATUM, UNTERSCHRIFT
\end{flushright}

\end{document}
