[Red Badger]

Maybe he should bave bought Traveler's Cheques.......

[DBrow]

"Traveler's Cheques......."

Which deliberately have their own odor, sort of like Play-Doh but sweeter.

I think dogs could alert on them. Let's try: you send me 80,000 in Traveler's Checks parcel post (10s and 20s) and I'll try to fly them back to you. If I don't make it, it was the dogs that got the cash. Honest. My uncle was a high ranking official in Elbonia who entrusted me with his considerable treasury. You can trust me!

[Gideon Reader]

Same as Cash.
Representative or transferable specie is also required to be declared.
You can have as much as you have. Just declare it and move along.
Bearer bonds, diamonds, etc.