I have a set of those brake levers on a Gitane. Odd, I have had several bikes with these MAFAC levers. I would have thought they were common. Anyway, the pair I have is missing all but one of the red thingamajigs. So you can have the one I have.

I will PM you for shipping address.

EDIT: Funny thing is I have had several bikes with the QR MAFAC levers. All of them were missing the red tabs. When I got the Gitane with the little red tab on it, my first thought was did someone stick something on the lever or was this some ancient original packing material. Then I saw in a picture on the internet that the red tabs were part of the QR setup.