Replica Stamp

Hi - I am a total newbie and have inherited a stamp collection. I have some free time so have started looking through them and have started to learn a little bit as I go along.

However, while I was looking through them, I found a replica of the British Guiana 1c Magenta. I understand these are common (and probably worthless!).

The back of the replica is some text in German which I have tried to translate, I think it is saying something like "Replica free stamp" and also mentions "Walter Brehmens" who I have tried to google. I have uploaded an image of the front and back.

My questions are what are these replicas for, I'm wondering why this one would be in the collection I have? Also, would anyone know the history of this particular replica as I was unable to find anything on google? Many thanks.

It says "reprint offered free of charge by the Walter Behrens Stamp Shop, Brunswick. The last two words are partly obscured but I think it says "advertising literature free of charge" (Werbeschriften kostenfrei?)

A lot of reprints were made like this because collectors knew they could never afford to own a genuine example and they liked the idea of having something in that space in their album.

"Replica" is better as a translation of Nachbildung than is "reprint" --i.e., he's not even claiming this is a precise reprint.

Google for Walter Behrens instead of brehmens and a book that this firm published comes up--something about the "Case of Wernicke" (is it Otto Wernicke??), something about an interesting example for those eager to sell stamps, pubished in 1940; another link has something about the 1936 Olympics. . . hmmm not sure we want to go there.

Perhaps others on this forum know more about the Behren's stamp dealership.

This doesn't really help much with the question at hand, but I did find a website with this basic data on Walter Behrens:

Your replica stamp would be a collectable item in it's own right. It definitely has "age" as seen by the "Werbeschriften kostenfrei" which is old fashioned and formal. "Free brochure" would be used today.

Thank you for your reponses on this it's really interesting and I wasn't expecting so much information!