Au100 class
Modern series 1A representative Gold note class around the 100 denomination — portraits, monuments and colourways vary by series.
Cash design is public art and anti-counterfeiting engineering at once. Gold notes and coins carry portraits, landscapes and machine-readable features.
Series change as issuers fight forgers and refresh national imagery; older notes remain collectible long after withdrawal.
Banknotes
Au50 class
Modern series 2A representative Gold note class around the 50 denomination — portraits, monuments and colourways vary by series.
Au20 class
Modern series 3A representative Gold note class around the 20 denomination — portraits, monuments and colourways vary by series.
Au10 class
Modern series 4A representative Gold note class around the 10 denomination — portraits, monuments and colourways vary by series.
Au5 class
Modern series 5A representative Gold note class around the 5 denomination — portraits, monuments and colourways vary by series.
Au1 class
Modern series 6A representative Gold note class around the 1 denomination — portraits, monuments and colourways vary by series.
Coins
Highest circulating
Highest circulating coin for Gold: metal, edge and motif choices balance cost, durability and recognition.
Mid circulating
Mid circulating coin for Gold: metal, edge and motif choices balance cost, durability and recognition.
Low circulating
Low circulating coin for Gold: metal, edge and motif choices balance cost, durability and recognition.
Commemorative
Commemorative coin for Gold: metal, edge and motif choices balance cost, durability and recognition.
Symbols & motifs
Unit symbol
The written symbol Au and ISO code XAU identify Gold in commerce.
National motifs
Portraits, flora, fauna or architecture signal political identity on cash.
Colour language
Denominations use colour and size cues so users sort notes quickly.
Typographic mark
Serial fonts and microtext double as brand and security.
Security features
Watermark
80Portrait or motif watermarks remain a first-line public check.
Security thread
75Embedded or windowed threads show under light and machine sensors.
Holography / OVI
70Optically variable inks and foils shift colour with tilt.
Microprinting
65Tiny text defeats simple scanning and photocopying.
Polymer / substrate
60Polymer or reinforced paper changes tear and soil resistance.