No big deal. Just send me the full binding post. Its better sending the whole binding post plate if it is removable. I have some imported ones even otherwise I will try to get similar one.
If I am not wrong it's a round plate with two binding posts screwed in with 4 screws. Just remove the 4 screws the plate will open up. The wires would have been connected with quick connectors just pull them (if soldered then get it desoldered) now you have the mounting plate in hand that's all.
Courier it to me I will try to get the same one and fix.