1970 Surplus Slop The Windy City San Francisco Art Institute Extra Fine 61
Updated August 6, 2026
| Lot number | 0073 |
| Estimate | $100 - $200 |
| Opening bid | $10 |
| Auction | Hot August Concert Poster Auction |
| Date | August 10, 2026 at 2:00 PM EDT |
| Auction house | Psychedelic Art Exchange |
| Location | Baltimore, Maryland |
This poster reading "Slop from the Windy City" announced an art show at the San Francisco Art Institute in the Spring of 1970.  --CRITICAL DETAILS-- --TITLE Surplus Slop The Windy City
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