Another CNVV query

Thanks for all the helpful responses to my earlier questions. Since no good deed goes unpunished, I have a couple of additional questions for pilots who have obtained their "Licence Equivalence" to fly in France.

The instructions I received from CNVV say that in addition to a copy of my pilot's license the French authorities require some sort of authentication of my license signed by the FAA. I am not aware that the FAA issues special letters such as that, so I wanted to know what the French authorities have accepted from other American pilots to satisfy this requirement.

The instructions also state that I need "a medical certificate (less than one year) Class 2," but I do not know what they mean by that. My FAA Third Class Medical Certificate is valid through August 2015, and I'm trying to find out whether that will suffice, or if I need to update it, or if I have to get a Second Class medical.

Thanks in advance for any assistance.

Best regards,

Don Davidson