I have a number of Braun Buffel items but my favourite are my credit card holder and my single key holder both in yellow, I bought these from Singapore 4 years ago. Unfortunately I broke the stud that holds the key in the key holder and I cant find any leather stores that sell the correct one. Also I cant seem to find any braun Buffel stores on the internet that sell the yellow items anymore. Does anyone know where i can get replacement studs or a new yellow single key holder.