2 Silbergroschen blue and 3 Silbergroschen yellow-orange, Friedrich Wilhelm IV. on plain background, stamps mostly cut touching design, folded letter wrapper with horizontal crease, cancelled with three-line boxed "SAARBRÜCK BAHNHOF EXPED 14 4", registered to Berlin, correct franking of 3 Silbergroschen for a letter up to 1 Loth plus 2 Silbergroschen registration fee, photo opinion Voigt VP (2017), Mi. 550.-