B Restaurant and Bar (Yerba Buena Gardens -- Upper Terrace)
720 Howard St
The Deal: $1 half-shellers, Tues-Fri, 4:30-6:30pm.
Anchor & Hope
83 Minna St
The Deal: Hit its Oyster & Stout happy hour for $1 oysters (rotating chef selection), Mon-Fri, 4:30-6pm, plus you can pick up a half-dozen oysters and a North Coast Old 38 Dublin Dry Stout for $11.
860 Folsom St
The Deal: $1.50 oysters, Mon-Thurs, 5-7pm; Fri, 4-7pm.
1725 Alameda St
The Deal: $1 oysters, Sun, 11:30am-3pm.
564 4th St
The Deal: If you can get through the name of the place without giggling, Chris Cosentino and co. are offering oysters that’ll cost you one clam, Mon-Thurs, 5-6pm.
662 Mission St
The Deal: Hit up its "Stirred, Shaken, and Shucked" oyster happy hour every Monday at 4pm for $1 oysters served with house-made mignonette (and 20% off bottles of wine).