I will share with you some of the common type of banknote that a typical collector will always look for.
Replacement note with prefix ZA
Error notes are the mistake notes that due to printing error. Error could be due to many reason such as misalignment, color deterioration, missing number and etc. Normally, prior to issuing new banknotes, central bank will check and screen through each and every note to ensure notes to be issued to public are in good order. If any mistake or imperfect printed notes are discover, they will be destroyed and replaced with replacement note.
Misalignment Error Note
Fancy Number Note
Many collectors like to collect notes with fancy number. For example note with 1111111, 2222222, 3333333 and etc . These notes only can be obtained 1 in 9999999 for a different prefix that issued by central bank. Relatively they are rare and always become collector's favorite.
Commemorative notes are normally issued by central bank to commemorate a special event such as installation of new king, Independence anniversary, sport event and etc. These notes normally issued with limited copies and most of the time they also come together with special folder and description. The value of commemorative note normally will appreciate faster than ordinary circulating note.