Yes, pics would be nice. This is the 2nd O.G. Scherell peddled example,
http://www.doublegunshop.com/forums/ubbthreads.php?ubb=showflat&Number=163521#Post163521 , posted in a week. From what I've gathered, I too think the O. G. Scherell firm began in 1834. I would assume that he obtained his master's brief before founding his firm so he was born circa 1810. I've read also that he was a top notch gunsmith but I find it difficult to put him at the top considering all the other makers. I haven't seen a trade label but I would assume he was sourced by a Royal Court or 2. Here is a pic of his shop in 1934 from an oil peddling advert.:
http://www.schaftol.de/English/english.html .

I think that after his death in the 1880s or 1890s, both a wild guess, that his company heavily sourced Suhl and that he either advertised he had a shop there or they had an office there to acquire longarms and/or components. Prior to mechanization pretty much all of the gunsmiths excelled at the craft as many of the components were made inhouse. And your example of the Herold, Franz Jaeger's patent, also confirms the Suhl sourcing. Does it have 2 locking lugs on the outside? Could you check the spelling on eingth of "Herold eingth schutzmarke"? It means something of the sort of Herold protected brand. Simson purchased some of Jaeger's patents or they were shared so I expect to see Suhl proofhouse marks and Suhl maker's marks and possibly sourced from Simson. It seems that in the 1930s the name Waffen Scherell Berlin was used and after 100 years they may have adopted that tradename.
Kind Regards,
Raimey
rse