The Big Rocking Horse Postal Numismatic Cover (PNC), a 2025 release from the "Aussie Big Things 2" series by the Royal Australian Mint and Australia Post, celebrates the 18.3-meter wooden landmark in Gumeracha, South Australia, built in 1972 by Dean Wenham. Featuring a $1 aluminum-bronze coin with a detailed rocking horse above a rural scene and "Gumeracha" sign, alongside a stamped envelope in vibrant purple and yellow tones with rolling hills and balloons, this PNC captures the Adelaide Hills' charm in a legally tender collectible.

This PNC blends numismatic and philatelic appeal, highlighting the Big Rocking Horse’s status as a tourist favorite near its original toy factory site, enhanced by its 2000s refurbishment. Part of a 10-coin series including the Big Prawn, it’s priced at $20 AUD with a three-per-customer limit, offering collectors and travelers a nostalgic slice of South Australian heritage.