If you allow me to answer for you 1812,

"Österreichs Orden und Ehrenzeichen" von Dr. M. Christian Ortner und Dr. Georg Ludwigstorff

Or the english version "Austrian Orders and Decorations"

Ortner is the director of the Heeresgeschichtles Museum in Vienna. It's an excelent book! A must have for anyone interested in Austrian orders.

If you mean the last post, i think it's Feldmarschallleutnant Paul Edler von Nagy at the MMThO Promotion at Villa Wartholz 17th of August 1918. 

This is his entry in the 1918 Rangliste

Well, thank you for answering. I know it hasn't the usual appearence. The backside looks like the one from the Iron variant founded in 1916. I have found anotherone with a similiar backside. It was auctioned at Dorotheum in 2016 (picture from their website). It is mentioned there as a luxury piece.

My theory is that it is maybe a private purchased one? For having a more luxury version than the awarded one.?

Hello, this is my first post in this forum, i hope you like it,

I am collecting austrian, german, and british stuff,

I was wondering if someone can tell me more about this "Goldenes Verdienskreuz mit Krone"

(pictures from the seller)