Hi,
First of all, you have a marvellous piece *.* Must have been expensive....
So, you won't be able to tell an exact year or even a decade with these. A few things are certain though.
1: Not an early (early 19th century) variant, which was quite different from these
2: Not wartime piece neither, considering there is no war decoration and the piece is plain gold, not goldened bronz. Definitely a peace example.
3: The later, latest ones have the numbers on the back in a, let's say' more modern and conventional font style, instead of this overornamented one.
Based on these I'd say sometimes between the later part of the 19th century - 1914. It is still more decades but in my opinion it cannot be concluded more certainly. Though I admit I am not a hardcore expert in this particular order.
(p.s.: How did you mean the ribbon is not from this? Not from this particular piece? Because otherwise it is a fine Iron crown band:) )
Cheers