$10,000?

I read a Singapore blogger posting who presumably works in a bank coming across the Brunei $10,000 note and posted the picture of the note up. I think she said something along the line that it was the largest note she has ever seen and she said that the money resembled 'hell money'. At first I wasn't quite sure what she meant by 'hell money' until I realised she was referring to the 'paper money'