If you found it on a critter that wields TWC weapons normally, it might have been a random weapon drop you found (esp if that critter doesn't disarm). I think having a bard sing to it will show if it was registered to someone as well.

Starchitin, the OG

A severed gnomish hand crawls in on its fingertips and makes a rude gesture before quickly decaying and rotting into dust. A gust of wind quickly scatters the dust.

That's an odd place to find a weapon.... hopefully it was just someone accidentally typing PUT by it's self and not that something involved in the invasion recently was disarming.

Starchitin, the OG

A severed gnomish hand crawls in on its fingertips and makes a rude gesture before quickly decaying and rotting into dust. A gust of wind quickly scatters the dust.

Missclick while having item links on will do it too, just drag 1mm away and it will be dropped on the ground.

Sweet is the sound of the pouring rain,
And the stream that falls from the hill to plain.
Better than rain or rippling brook,
Is a mug of beer inside this Took.