EXTREMELY Ruined Buckle Restoration, M. 1888 World War 1

This ruined Buckle I received from my friend it is M. 1888 Buckle and it belonged to an infantryman of the powerful Austrian Imperial army. It was in really bad condition extremely oxidized and needed restoration so at first I even thought it couldn t be restored. I used many methods and It was not easy to restore this beautiful Buckle and make it such perfect. All the Restoration processes is below: At first need to take off prong and bar it can be easy done with pliers but the most complicated task for me was to take out the rusted pin which was stuck and deadlocked inside the bar. It was fixed heated and boiled in oil and for better removal I applied a hammer. It is made of stamped brass so to clean the surface from oxide I prepared special composite which consists of some flour salt mixed with 9 Vinegar and lemon juice (citric acid) this is a very effective and proven method for Restoration. The Buckle was cracked and bent in four places and took me too much time to fix it. That was hardest solderi