Tschüss!
I need your help). I have found that button in Poland. Diameter 23 mm. Very light, probably of tin. Colour like silvery but for sure it is not a silver.
Is it german? I think that it is prussian military button. is it true? What century it may come from?
there is any classification of similar prussian buttons?
grüß

Hello qviatus,
if the bird has an sword and an orb in his claws it is an prussian. If not it is German Empire.
Sorry but I can't say nothing about how old it is, becaus I can't see enough.

Greets

Michael

P.S. Sorry for pitching english.  It is the rest of school english and more than 40 years old. 

The button is plain. It have not any eagle....

Hello qviatus,

OHA  
Is it my fantasy that I seemd to see an eagle? I mean to see a head and an rest of to wings. If it is plain please clean the backside betten. It is possible that you found some letters from the producer. Maybe the name helps zo find more about the button.

Greets

Michael

... there is no any letters on backside.
I think that similar buttons were used in 18th century until about 1815.  Then they launched a buttons with numbers. Yes?

Haben Sie einige Informationen über diese Knöpfe? )

Hi

Diese Knöpfe sehen von der Öse her und mit dem Rand auf der Rückseite schon mal ähnlich aus. Gefunden auf den Napoleonischen Schlachtfeldern bei Leipzig 1813 und werden allgemein den Preußen zugeordnet. So richtig sicher sein kann man sich bei einem "glatten" Knopf wahrscheinlich nie.

Gruß

Zeitzer

ähmm- wenn das bitte mal jemand ins englische übersetzen könnte. Als alter Ossi...