Cirkelmunten

Cirkelmunten is a term used in numismatics to describe coins whose planchet is circular. It denotes the most common shape for circulating coins worldwide and serves to distinguish these coins from polygonal or otherwise non-circular issues. While the vast majority of modern coinage is circular, there are occasional exceptions where authorities have issued non-circular designs for security, branding, or commemorative reasons.

Historically, circular coins have been predominant across many regions and periods, valued for their ease of minting and handling. Non-circular shapes have appeared from time to time, often to create a distinctive national symbol or to deter counterfeiting. A well-known example of a non-circular issue is the United Kingdom’s seven-sided 20-pence coin, introduced in 1982, which stands out from typical circular coins. Other countries have issued polygonal or otherwise shaped issues, particularly for commemorative programs.

Production and design aspects of cirkelmunten vary by issuer but share common elements. They are usually struck from metal alloys such as copper-nickel, nickel-brass, or cupronickel, sometimes with inner and outer layers in bimetallic coins. Edges can be plain, reeded, or inscribed, and many coins carry a national portrait, denomination, year, and mint marks. Security features, such as micro-engraving or intricate relief, may be incorporated to deter counterfeiting.

In circulation today, cirkelmunten remain the standard form for everyday currency in most countries, though collectors often seek special editions, proof sets, and historical issues. The term helps distinguish the familiar circular coins from other geometric shapes encountered in numismatics. See also: coin, numismatics, currency.