What happens now?
If I was Mark, I would make the following statement in saying something along the lines of:-
After all the trouble and stress this has caused, I do not wish to spend one more ounce of energy or one penny in doing anything more regarding this marker. If breakwell wants it, then he can come across to Ireland and collect it otherwise it can either go in the trash-can where it belongs or I will just put it in the garage until breakwell turns up … that would be my well-meant advice to Mark.