Dereu and Sons Manufacturing Company (aka Spy-Coins.com).
Back many thousands of years ago, my elementary school library was full of books like F. B. I. The “G-Men’s” Weapons and Tactics for Combatting Crime
Anyway, one of my favorite stories was the one about Rudolph Abel and the newsboy. Not because I had any real investment in catching Russian spies, but because I thought a hollow nickel was incredibly cool, and I wanted one badly.
Flash-foward mumble mumble years to DEFCON 17. What do I find at one of the vendor tables? Yes! Hollow nickels!
Since I was older and more mature, though, a few thoughts came to me. One was that I didn’t have a whole lot of cash on me at the time, and using an ATM at DEFCON…might as well go ahead and pull on the Bad Idea Jeans. Another thought was that a hollow nickel might be cool, but what are the chances I wouldn’t end up spending it by accident?
So I took some notes, surfed the web, waited until I got home and someone had a birthday, and then placed an order…
I’m probably not going to spend a Euro. But it doesn’t stand out (except to me) and I can always pass it off as a lucky piece.
Looks just like a normal coin.
One ring to find them all and in the darkness bind them. (Actually, you get two rings; one for you, and one for your contact.) Put the coin into the ring, tap it on a hard surface two or three times, and…
…Stalin’s your uncle.
Microfilm? To heck with microfilm! This is the 21st Century!
As I understand it, you can get these microSD cards in sizes up to 16GB now.
In addition to nickels and Euros, they have a variety of other coins, along with some other curiosities. They also ship rapidly (first class mail), and you can even get coin/card combo packs (one stop shopping for all your spy needs).
(These were not freebies. I’m just a very satisfied customer who paid full listed price.)