A Square Button, Not a Flat Wafer
Most one ounce gold bars are flat rectangular wafers. The Perth Mint casts this one into a thick square “button” instead, poured into a mold rather than struck under a press. The Perth Mint has operated in Western Australia since 1899 and has been wholly owned by the Government of Western Australia since 1970. Every bar holds one troy ounce of .9999 fine gold, at a lower premium than the Mint’s own minted bars because the finishing steps a struck bar needs are skipped.
The Swan Mark
The Mint stamps its swan logo into the cast surface, the same mark it uses as its LBMA-registered hallmark, alongside the weight, and purity. The reverse carries a second stamp naming the Mint, the fineness, and Western Australia. Corners round off and the sides bulge slightly outward, the shape a mold leaves rather than a die. A serial number is struck, right into the cast metal.
Every Bar Casts a Little Differently
The Perth Mint’s own listing for this bar states plainly that finish, surface texture, and shape vary slightly from piece to piece, since each one is poured rather than pressed to a fixed die. The bar you receive will not match a product photo exactly, and that variation is normal for a cast bar rather than a flaw in any one piece. Variation is expected, confirmed by the Mint’s own listing, not a defect to flag.
An LBMA Referee, Eligible for an IRA
The Perth Mint is one of a small number of institutions the London Bullion Market Association appoints as a referee for Good Delivery gold, a role that sits above ordinary accreditation. At .9999 fine, this bar also clears the IRS’s minimum for a precious metals IRA. The Mint referees the standard, rather than simply meeting it.
Perth Mint 1 oz Gold Cast Bar Specifications
Every bar holds one troy ounce of .9999 fine gold, cast into a 19mm square with a smooth edge and its own serial number. One troy ounce, cast square, not a flat rectangular wafer. Full current specs are on the Specifications tab above.
Perth Mint 1 oz Gold Cast Bar FAQ
Why is this bar square instead of a flat rectangle?
The Perth Mint casts this bar into a thick square “button” shape rather than pressing it flat, which is part of how it keeps the premium below a minted bar. The shape is deliberate, not a different product mislabeled.
Does this cast bar carry a serial number?
No. The Perth Mint cast gold bars do not bear individual serial numbers.
Will my bar look exactly like the product photo?
Not exactly. The Perth Mint’s own listing states finish, texture, and shape vary slightly bar to bar since each is poured rather than struck to a fixed die. Some variation is normal, not a sign of a flawed piece.
Is the Perth Mint 1 oz Gold Cast Bar IRA eligible?
Yes. At .9999 fine, it clears the IRS’s .995 minimum for a precious metals IRA with plenty of room to spare. Eligibility isn’t a close call, given how far past the floor it sits.
What condition does it ship in?
New, straight from the Mint with no handling in between. Condition is new, not a numeric or third-party grade.
Curious how this compares to the Mint’s minted bars? Browse our full selection.
Ready to add a distinctive square ounce of Australian government gold to your stack? Add the Perth Mint 1 oz Gold Cast Bar to your cart.





Product Reviews
Login to ReviewThere are no reviews yet.