Muscat: The Central Bank of Oman has issued a warning against disfiguring of banknotes by scribbling on them or indulging in other practices that mar their shape and appeal.

"It has been noticed that some staff of banks, money exchanges ... are in the habit of putting stamps and pins, writing numbers and sometimes different names on the banknotes...," Hamoud Bin Sangour Al Zadjali, Executive President of the CBO, has said in a circular.