It's your buckle but I really love the green patina. I just read an interesting method for stabilizing the iron guts of brass and/or silver shoe buckles and knee buckles. Basically, tape off the brass and very carefully apply super glue to the iron using a dental pic to spread it around so it will run into the cracks and stabilize the iron. Obviously, doing this in a well ventilated environment with eye protection would be advisable.