As Ben says, that is probably their unique trailer number at the top right.
The bent left hand end of the rear bumper could be a distinguishing feature, but TAL probably own hundreds of identical trailers which would make it hard to track down.
As the name suggests, they lease trailers, so can’t be expected to know where any of there trailers were at a specific time, unless…
It is possible that they have tracking devices on there trailers for theft recovery. Some transport companies do, but it’s more common for high value loads than leased curtain siders.
It might be worth contacting them, although I wouldn’t hold out too much hope.
1. It’s probably not tracked.
2. If it is, the system will be set up to input a trailer’s number and find it’s location at any time. It may not be possible to input a location and time to find a trailer’s number.
3. They probably won’t divulge the information to an individual.