ChatGPT offers the following...
Nice find! That’s a
Chinese cash coin, the type with a square hole in the center. These were cast for many centuries, so let me break down what I can see.
What it likely is
The characters appear to be written in
traditional Chinese in the standard four-character reign-title format used on most cash coins:
(Top) — (Bottom) — (Left) — (Right)
From the shapes of the characters, it looks very close to coins from the
Qing Dynasty (1644–1912). The squared-off, bold script and the overall layout resemble:

Likely match:
Qian Long Tong Bao (乾隆通寶)
Reign of the Qianlong Emperor
Minted: 1736–1795
This is one of the most common Chinese cash coins found worldwide — and they did travel! They reached New Zealand, the Pacific, and even the Americas through trade ships.
How to confirm
Check these details:
- Top character: 乾 (looks like a complex stacked character)
- Bottom character: 隆
- Left: 通
- Right: 寶
If yours roughly matches these strokes, you’ve got a Qianlong-era cash coin.
Value
Usually just a few dollars unless it’s an early mint or rare variety. But as a metal-detecting find in New Zealand —
very cool piece of history. These often came with Chinese laborers and traders in the 1800s.