The Interval

Fair Market Value of Common Goods Received

All donations to The Long Now Foundation are tax-deductible—minus the fair market value of any goods or services received. The fair market values for most of our goods and services are listed below (please note that some items are not currently available).

Challenge Coin$3
Long Now Membership Card$15
Window Flask (no longer available)$18
Works in Progress book$20
Brian Eno’s Bells CD$20
Etched Flask$60
Bottle keep (fill or refill)$90
Rosetta Wearable Disk$100
Interval Tea Club$150
Equation of Time Cam$900

The Long Now Foundation is a 501c3 nonprofit organization and our tax identification number is 68-0384748. Please don’t hesitate to email us at donate@longnow.org if you have any questions about your donation.