%%
%% The LaTeX Companion, 3ed
%%
%% Example 9-5-15 on page I-703 in "Altering the subencoding setup for individual glyphs".
%%
%% Copyright (C) 2022 Frank Mittelbach
%%
%% It may be distributed and/or modified under the conditions
%% of the LaTeX Project Public License, either version 1.3c
%% of this license or (at your option) any later version.
%%
%% See https://www.latex-project.org/lppl.txt for details.
%%

\documentclass{tlc3exa}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{111.0pt}

  \renewcommand\rmdefault{cmr}

%StartShownPreambleCommands
\usepackage{overlock}
\DeclareTextCommandDefault{\textcurrencysf}
   {{\fontfamily{Rosario-LF}\fontseries{l}\selectfont
     \UseTextSymbol{TS1}{\textcurrency}}}
%StopShownPreambleCommands

\begin{document}
\sffamily Overlook: \textcurrencysf \\ Close enough?
\end{document}