All those pieces do not match. In fact, the fork at the very top left looks like it matches the set that I use every day. Does it say Walco Stainless Indonesia on the back?
I inquired about the hallmark with some other people I know...
Exactly which piece of flatware is that hallmark from?
You didn't didn't answer my question. Could you specify which piece does this hallmark come from? Maybe even give a better picture of just that piece of flatware.