These planes were captured and used by Ljubljana squadron of newly formed Serbo-Croat-Slovene Kingdom in a "war for northern border", as it is commonly known, i.e. war for southern part of Austria where majority were Slovenes. This happened 1919-1920.
Afterwards planes were used for training until mid-twenties, and today unfortunately not a single original exists in our region...
I had that BR decal set, but don't have any idea where it is lost, although I've bought a Roden kit to pair it with.
As far as I know, these planes were originally series 53, later converted to 253. I'll try and find details that differ...
A nice book is expected from two Slovenian authors on these 1919 happenings, but in talks to one of them I learned that no deadline is set, although we're all pushing them to finish... Guys have their day jobs, and that's the reason everything is moving very slowly
No.1, in attachment is pic of this decal sheet, as taken from hannants