A.
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A great place to buy antiques and other secondhand stuff - glassware, ceramics, paintings, cookware, etc. Probably the best such place in the city.
However, one warning: you may be a little disturbed by the presence of World War II memorabilia from, shall we say, "the Axis side".
Also, pro top: try to visit on a day with good weather if possible. In bad weather there are less traders.