Trumpets at Mt. Sinai

I am fascinated historical Bible illustrations.  This woodcut by Julius Schnorr von Carolsfeld is from the 1860 Die Bibel in Bildern. It is a beautiful composition. Yet it takes liberties with the Hebrew text. It shows multiple metal trumpets, not the single shofar described in the text (Exodus 19:19). 

Image from http://en.wikipedia.org/wiki/File:Schnorr_von_Carolsfeld_Bibel_in_Bildern_1860_054.png 2012-06-02