Australian Banknote Serial Checker | Klazzik Numismatics
Klazzik Numismatics
Free Australian Numismatic Tool

Australian Banknote Serial Checker

Enter the details printed on your Australian banknote. The checker looks for collectable serial-number patterns and, where Klazzik reference data is available, identifies the issue, reference number, signatures, first or last prefix and star replacement notes.

Check your banknote

Enter your banknote prefix and serial number to identify the issue, reference number, special prefix status and collectable serial patterns.

You can type A40, A/40, AC00, H/A00, HA00, a single letter such as J, or an early prefix/suffix pair such as A-A. The checker normalises common formats automatically.
For a star/replacement note, include the asterisk at the end exactly as printed on the note, for example 12345*.
Important: a prefix can occasionally sit on a boundary between two recognised issues, or be shared by visually different sub-types. The checker reports those possibilities and tells the collector what feature must be checked rather than pretending the prefix alone proves the answer.
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CHECKER RESULT
BANKNOTE RESULTS
Awaiting check
Denomination —
Reference —
Issue —
Prefix —
SERIAL PATTERN CHECK
Results will appear here after your banknote is checked.
What the checker can identify

Fancy serial patterns

Radar / Palindrome

Reads exactly the same forwards and backwards.

Solid Serial

Every digit is identical, such as 777777.

Repeater

A block of digits repeats across the full serial.

Binary

The serial contains only two different digits.

Ladder

A clean ascending or descending numerical run.

Low Serial

Very low numerical serials are automatically flagged.

Double Quad

Two groups of four matching digits, such as 11112222.

Four Pairs

Four repeated pairs such as 11223344.

Bookends

Matching digits or blocks at both ends of the serial.