Detail of Kai and Sunny's Falling Frequency, a letterpress print: rows of pale blue rings over dense vertical black lines.

Guides

Collecting

What collectors look at — edition numbers, proof states, watermarks, framing — and how to read each before you trust a print.

Proof marks

Proof marks

What BAT, AP, PP, HC and EV mean on a print, who each sheet belongs to, and how a trial proof differs from a state.

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