Hello, will be in Vienna, Austria for 3 days. Looking for any Flohmarkt, flea market with coins as well. I know of this: Flohmarkt am Wiener Naschmarkt, but I will not stay any Saturday. Is there any similar open weekdays?
In my experience flea markets in Europe tend to not be open on weekdays, just on Saturday/Sunday mornings and early afternoons. Perhaps some antiques shops might also have a few coins for sale.