We can't open the padlock on a gate to part of our garden. The three matching keys on the same split ring which I thought were the correct ones don't fit, although they are branded SIL, like the padlock. I've been through all the keys in both places we keep them.
I've also looked in a box of bits, but there was nothing there. I need to go through DP's toolbox and some drawers with bits and pieces in.
The really annoying thing is that we had to cut the chain off to fit our own lock as the people we bought from couldn't find the keys!