Qatar & Dubai Reference Page | Serial Number Prefixes
The serial number prefixes used in Qatar & Dubai are a standard fractional prefix of the type referred to as 'Series letter'. That is, all notes used the same prefix letter of ا, positioned over a number. So, all serial numbers started with the prefix ١/ا followed by ٤/ا ,٣/ا ,٢/ا, et cetera with the number incrementing as the series continued.
Should further series of these notes have been introduced, they would have adopted a new letter for each subsequent series. As it is, there was only one series of notes produced.