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Selling Coins & Banknotes in New Zealand
Sell Your Coins & Banknotes in New Zealand
Thinking of selling?
How It Works
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Get in touch with us
Complete our basic form — it takes about a minute.
The form asks whether you have photos of the item(s).
They aren't necessary, but they greatly help us provide a more accurate response to your enquiry. Group photographs are welcome and speed up the process.
Prefer email? Contact us directly at sales@aventine.co.nz, and we’ll respond the same way. Otherwise, book an appointment or walk in to visit us at our Auckland office.
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We review
Your submission is assessed by our Katalognator AI software and reviewed by one of our human specialists. We typically assist by informing you:
- whether it’s something we specialise/trade in;
- whether a valuation is worthwhile;
- which route is likely to serve you best — outright purchase, public auction, retail consignment, or a referral elsewhere.
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Next steps
If it's worthwhile for you, we can confirm an appointment or walk-in visit to our satellite branches in Christchurch and Wellington. For substantial collections, our specialists can arrange to meet you elsewhere in New Zealand. Otherwise, we can send you a free prepaid, signature-required NZ Post CourierPost bag so you can safely transport the item(s) to us.
Inherited a Collection? Not Sure Where to Start?
We regularly assist executors, trustees, and families who have inherited coins, banknotes, medals, or bullion and want to understand their options.
You aren’t required to sort, identify, or catalogue anything beforehand. Describe roughly what’s there, and we’ll take it from there on what’s potentially worthwhile.
If you need a formal written valuation for insurance, probate or estate division, we provide that as a separate service with a fee — mention it in your enquiry and we’ll explain what’s involved.
Frequently Asked Questions
- Is the review free?
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Yes. We don't charge to review your items.
- Do you buy entire collections or estates?
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Yes. Group photographs of multiple items are welcome and make things easier for you.
- Will you buy outright, or sell on my behalf?
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Either. Depending on the items, we may purchase them outright or put them up for public auction. We’ll advise you on what we believe suits you best.
- How are offers calculated?
- We quote on an outright settlement basis. A premium timed-payment rate is available on request.
- It’s difficult to visit you. Can I send my items instead?
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Yes. We can dispatch a prepaid, signature-required NZ Post CourierPost bag to you free of charge.
- What if my items aren’t valuable?
- We’ll tell you if the item(s) aren’t of commercial interest for resale.
- Where are you, and can I visit?
- Our public office is at 31E Bartley Terrace, Auckland, 0624, New Zealand. Visit during open hours or by appointment nationwide within New Zealand.
Not sure whether it’s worth asking? Ask anyway.
