Originally Posted by: kimballthurlow 
Hi all,
Of course I may not be able to see the big picture, but to my eye the number series used by Marklin are completely meaningless to the customer. They are probably meaningful to the factory, and may relate to product sourcing, shift responsibilities, or release schedules. Who knows? I have never worked in a manufacturing environment.
regards
Kimball
Hi Kimball,
well, I really do not know the ideas of Maerklin, but as far as I understand Maerklin's loco numbers they use the real original old and/or changed numbers as an example for all of their locos. I am not an expert, but I think that all of the models from Maerklin were one time existing somewhere in the world.
In German communities there are real experts present and a storm of anger (or do I better say outrage or outcry?) erupts, if the locos does not align with the original ones. They compare it with other producers of locos (like Roco, Fleischman, etc) as well as with the original ones. They scream out about the the differences to the original. Every design engineer of a railroad model has a hard job to design the loco very exactly to the original and considering real production cost for the model.
Of course there are plenty of books, articles, etc. explaining the schedules and/or numbering of loco class characterisations. It is so voluminous, I decided, to show here only a few links, most of them from the German Wikipedia. I keep them in German, but by most of the articles you find on the left side a button to get the text in English. If not, please apologize and help yourself. The documents are voluminous. But most of the links includes pictures, tables and graphics which are already informative without reading the text. And honestly: I myself did not read all these documents yet.
Enjoy studying the German railway numbering. The weekend will be long.
Here are a few links – only the first one is in English and perhaps most interesting to you:
DB locomotive classification - Wikipedia
https://en.wikipedia.org...ocomotive_classificationWikipedia Baureihenschema der DB
https://de.wikipedia.org...i/Baureihenschema_der_DBWikipedia Bauartbezeichnung von Triebfahrzeugen
https://de.wikipedia.org...nung_von_TriebfahrzeugenWikipedia Baureihenschema der Deutschen Reichsbahn
https://de.wikipedia.org...der_Deutschen_ReichsbahnWikipedia Baureihe (Eisenbahn)
https://de.wikipedia.org/wiki/Baureihe_(Eisenbahn)Wikipedia Liste in Deutschland vorhandener Dampflokomotiven
https://de.wikipedia.org...andener_DampflokomotivenWikipedia Liste in Deutschland vorhandener Dampfspeicherlokomotiven
https://de.wikipedia.org...DampfspeicherlokomotivenWikipedia Baureihe V 200
https://de.wikipedia.org/wiki/Baureihe_V_200Wikipedia DB-Baureihe V 200.0
https://de.wikipedia.org/wiki/DB-Baureihe_V_200.0Trans-Europ-Express – Wikipedia
https://de.wikipedia.org/wiki/Trans-Europ-ExpressWikipedia Lokbezeichnungen
http://www.modellbahn.fs...ml/lokbezeichnungen.htmlListe der Lokomotiv- und Triebwagenbaureihen der Deutschen Bahn
https://de.wikipedia.org...eihen_der_Deutschen_BahnWikipedia Lokomotiven deutscher Eisenbahnen
http://www.lokomotive-on...e-online.com/index.html#regards
TEEWolf
P.S.: please help me too to improve my English and give me a feedback about strange mistakes I did in your language. Please feel free too to ask for German abbriviations you do not understand like "DLW", which is here used as "Dampflokwerk" = production plant for a steamer locomotive. There is still one e.g. in Meiningen, Germany.