German Commercial Postcard, Stuttgart: Age?

This is ~6" X ~4 1/8" on thin stock; looks like letterpress printed.
The text reads as follows (thanks to Google Translate):

Mr. W. Spemann
Publishing House
Stuttgart, 42 Reinsburgstrasse.

The undersigned hereby orders and requests delivery by mail, express delivery, or freight:
Sheets of stencil paper (price per 100 sheets: 7 Marks 60 Pfennigs)
Rolls of stencil paper, 15-20 kg (price per kg: 1 Mark 30 Pfennigs)
(Postage due Stuttgart, packaging at cost)
Payment is enclosed with a postal deposit; please collect the amount upon delivery.
Place and date:
Full address:

I'm interested in dating this as closely as possible, given the sparse information available; your research help is much appreciated!

 

Wilhelm Spemann founded his publishing house in 1873 and died in 1910. Unfortunately, those dates are consistent with the postcard's 5 Pfenning postage which doesn't permit us to narrow that window.

Debora

 

https://de.wikipedia.org/wiki/Wilhelm_Spemann (only in German, Italian and Swedish)

 

So the question is... Does it date to before or after this?

https://de.wikipedia.org/wiki/Union_Deutsche_Verlagsgesellschaft

"The publishing house was formed through the merger of three Stuttgart publishing houses: the Kröner brothers' publishing house, Hermann Schönlein's (which Adolf von Kröner had already acquired in 1888), and Wilhelm Spemann's. The agreement to merge the three publishing houses into a public limited company was signed on April 16, 1889, effective January 1, 1890. Adolf von Kröner became the managing director. When Kröner handed over the management to the publisher and Privy Councillor of Commerce Heinrich Beck, he became chairman of the supervisory board (until 1904). Wilhelm Spemann left the company after six years as a partner and founded his own publishing house."

Debora

 

In 1906, he was using "Berlin & Stuttgart" as the location of his company.

https://www.flickr.com/photos/morton1905/54811989739/

Debora

 

In 1900 the Stuttgart address was at Reinsburgstrasse 27 a

 

https://de.wikipedia.org/wiki/Datei:20170304_Stuttgart_-_Reinsburgstraße_42,_40.jpg

 

WOW! Those dates are plenty good enough...an' Thank You, Both...I'm amazed an' very pleased to have your most helpful input about this slip of paper. My deep gratitude for your efforts!

 

Here https://www.laborjournal.de/editorials/1786.php, in a text on his son, Nobel prize winner Hans Spemann, they do mention no. 42, saying that the family lived there, but don't mention when.