(Editor’s note: An SDR is an international unit of currency used specifically by the International Monetary Fund.)

I am a software developer who sends training courses all over the world. As a result, I fill out a lot of U.S. Customs forms. Today, I created a shipping label online at USPS.com, and noticed something interesting.

When I printed out the label, I noticed that in the upper right hand corner, it had Insured Amount (US $) and SDR Value. The insured amount was US$10.00 and the equivalent SDR Value was $6.25. I took it into my local Post Office and asked the PostMaster about it. She said it was Special Drawing Rights, but that was all she knew about it. But, she pulled out her book and looked it up. It said the exchange rate was such:

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