Karel Martens: Perpetual Calendar
Karel Martens conceived this A3 wall calendar as a prototype in 1968. The design has been unrealized until now — a limited edition publication from Roma Publications. The Perpetual Birthday Calendar is built on a single die-cut shape, repeated across colored card stock, layered until the pattern multiplies into something that couldn't have been predicted from the piece alone. Thirteen sheets, each a different color, each punched to the same geometry. What changes is what's underneath.
Perpetual because it isn't year-specific — designed to track birthdays, anniversaries, or any date worth remembering across years.
Karel Martens for Roma Publications. Made in the Netherlands.
Part of our Karel Martens, Dutch Design and Wall Calendars collections.
- Designer
- Karel Martens
- Year
- 1968
- Dimensions
- 11.75 × 16.5 in.
- Origin
- Made in the Netherlands
- Features
- 14 pages, softcover, spiral bound with hanging loop, 13 die-cut colored card stock sheets, perpetual (not year-specific), limited edition
Promotional discounts apply to over 500 items in our collection. As with all meaningful endeavors, there are boundaries - rare, limited edition, and sale items retain their original pricing.