Grateful Dead 1966 Can You Pass the Acid Test Poster Signed Ken Kesey Merry Pranksters
Updated August 6, 2026
| Lot number | 31252 |
| Estimate | $500 - $1,500 |
| Opening bid | $250 |
| Auction | Weird & Wild Pop Culture |
| Date | August 11, 2026 at 8:00 PM EDT |
| Auction house | Slate of Los Angeles |
| Location | Los Angeles, California |
This 1966 Can You Pass the Acid Test poster promotes events hosted by Ken Kesey and the Merry Pranksters. The psychedelic design names the Grateful Dead, Allen Ginsberg, Neal Cassady, The Fugs and
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