Most problems with custom coin orders are avoidable, and most of them happen before manufacturing starts. These are the real failure modes, in rough order of how often they occur.

An error approved in the proof. By far the most common. A misspelled name, a wrong date, an outdated crest or an incorrect rank abbreviation gets approved, and the die is cut from what was approved. Have a second person check names, ranks, dates and hull numbers before you sign off.

Counting production time only. The 45 to 50 day build starts at artwork approval, not at first contact. Design and approval rounds sit on top, and a chain-of-command review can add weeks nobody scheduled.

Ordering to exact headcount. Coins get handed to visiting staff and to people who arrive after the order. Groups that order precisely come back wanting more, and a reorder means another full production cycle.

A crest too detailed for the size. Artwork that reads fine on a screen can become illegible at 1.75 inches. Review the proof at actual size, not just full screen.

Leaving permissions until late. Insignia authorisation is usually a formality, but discovering a problem after the die is cut is expensive.

No named approver. A proof circulating among a dozen people without a decision-maker stalls indefinitely.

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