When Dies Strike Each Other

A die clash happens when the obverse and reverse dies slam together without a planchet between them. At 750-850 coins per minute, the automated feed system occasionally fails to deliver a blank — but the press cycle doesn't stop. The dies close at full force (35-150 tons), and the raised design elements on each die are driven into the opposing die's face.

The result? Every coin struck afterward carries ghost-like impressions of the opposite side's design superimposed on its own surface. On a Lincoln cent, you might see faint Lincoln Memorial columns behind Lincoln's head, or traces of Lincoln's profile on the reverse.

Why Collectors Love Clashes

They're common and affordable — Die clashes appear on virtually every denomination, making them an excellent entry point for error collecting
Strength varies dramatically — From barely visible to bold and dramatic. Strong clashes with clear design transfer command real premiums.
Photography is an art — Clash marks photograph best under strong directional lighting at a low angle. Getting the perfect image is part of the hobby.

Prime Clash Territory

Morgan dollars — The large surface and deep relief produce bold, easily visible clash marks. Hundreds of clash die pairs are cataloged by VAM number.
Lincoln cents — The most prolific source of clashes due to enormous production volumes.
Kennedy half dollars — The large format makes clash marks particularly visible and photogenic.
State and National Park quarters — 112 different reverse designs produced fresh clash material every few months.

Discussion

What's the strongest die clash you've seen or own?
Do you specialize in clashes within a particular series?
What's your lighting setup for photographing clash marks?
Have you found clash marks that helped you identify the die pair?

Die Clashes

Die Clashes: Ghost Images From Empty Strikes