There are 23 pieces total, service for 6 minus one knife.

6 each of forks, large spoons, and smaller spoons, and 5 knives.

There are no markings on these. The closest match I could find is World Market Inox Twig which looks very similar. These show a "fold" underneath.

They are heavy; each piece weighs over 2 oz. 

There is overall wear typical of everyday use.