Vol. 2 of Eugèene Heer’s Der Neue Støckel contains the following about Matthias (translated from German by Google Translate)-

Novotny (Nowotny) Matthias, Leitmeritz , Bohemia /CS +Vienna/A, adult 1825-1856+. moved to Vienna in 1838. Leases the business to Johann Springer in 1852. In 1853 he received the simple factory license, Joefstadt No. 182. He shot himself in 1856. In 1857 his widow sold the entire business to Johann Springer, who married Novotny’s sister. court purveyor.

Following are images of a rare J. M. Nowotny side by side Percussion Muzzle Loading Shotgun with a , what I refer to as a Box Lock action which was peculiar to the Austrian/ Bohemian Makers. (20 years ago this gun was owned by my friend, the noted author and collector-Hans Pfingsten and at the time I made a new right hand hammer for it.

The following images are courtesy-

© Joh. Springer’s Erben Handels GmbH, Wien