So I just got a parcel sent from Illinois to the UK. I just noticed a little box on USPS label, "SDR value" with it filled out.
So I checkout USPS website and see they've made some changes in January (http://about.usps.com/postal-bulletin/2012/pb22349/html/updt_004.htm).
Why have they valued 1 U.S. $ = 0.6502 SDR?
Why is my mail being valued in SDR? I figured Special Drawing Rights were only to come in when the currency is dead?