Contact NumisNook

NumisNook is a small, independent, ad-supported site — there is no support team standing by, but a real person reads what comes in to support@creditofficer.com.

A few things this address is genuinely useful for: a calculator that gave you a result you think is wrong (say which tool — the coin grade guide, mintage & rarity lookup, holder size finder, metal weight calculator, die variety ID helper, or storage humidity guide— and what you entered); a coin, mint, or historical topic you wish were covered; an out-of-date fact or broken link in the blog, learn section, or the Coin Museum; or a bug in how a page looks or behaves on your device.

There’s no fixed response time to promise, and no ticket number or live chat — email is read and handled as it comes in. NumisNook does not grade, authenticate, or appraise coins, and nothing here is a valuation or investment recommendation; if you need a coin professionally graded or authenticated, a recognized third-party grading service is the right place to start, not this site.

Before writing in about a tool result, it can help to double-check the numbers you entered — a grade abbreviation, a diameter in millimetres, or an alloy percentage are the most common source of a surprising answer. If it still looks wrong after that, that’s exactly the kind of message worth sending.