Colonial Bank of New Zealand sign

Right column

溢兑香港银两
“Exchanges Hong Kong silver.”

(i.e., We cash/convert Hong Kong dollars/silver taels)

Middle column

收买金沙价极相宜
“Buys gold dust at extremely fair prices.”

(“Gold dust purchased at very favourable rates.”)

Left column

色存生息皆银两
“Deposits earn interest, all in silver taels.”

(“Savings deposit interest is paid in silver taels.”)

Summary Meaning

This is a late-19th-century Chinese-language service board for the Colonial Bank of New Zealand, aimed at Chinese miners and merchants. It advertises:

Currency exchange with Hong Kong

Purchasing of gold dust

Deposit accounts with interest, denominated in silver taels