Citristrip. It did a fairly complete job. Then went over it with wire brushes and finally a stiff fiber cup on a drill. Working on a ding in the top tube, too.

It will reappear as a mid-60s Sauvage Lejeune.

This is the first bare frame I have seen in the flesh. I am taken by the beauty of the brass flows and the file marks. I was surprised at how little brass is visible. I am impressed by the workmanship that went into this. Makes me appreciate M. Carré all the more.