Maybe it's worth marking Brooks saddles underneath with a 'symbol' or something then photographing it on your bicycle and keeping a copy of it on your phone. As they're leather, a permanent marker should be enough to indelibly mark it - doesn't have to be your name or anything, just a unique mark. At least if you have to get the law involved, you have something you can show them then and there. I know i doesn't help with already lost saddles though...
Most Brooks do actually have a serial number stamped inside them (underneath)so get this copied now.
Most Brooks do actually have a serial number stamped inside them (underneath)so get this copied now.