Capital Kiwi asked Would this seem a reasonable approach?

Eminently, IMHO. Your diplomatic approach, coupled with your city of residence, prompted a question for the rest of the Board members. Here in NZ, the registration plates of vehicles attached to embassies begin with DC - Diplomatic Corps. I had always thought that the international standard was to use CD - Corps Diplomatique. Is NZ alone in abandoning this pretentious use of French, or am I, once again, lycanthropically barking up the wrong tree?