This is an interesting Vintage Mercier bike I found disposed of a while ago. It appears it is the same model as the one formerly used by Poulidor. Anybody knows more about
File:Cycle Mercier.jpg - Wikimedia Commons
velo-vintage - Vélo de course Mercier. #poulidor... | Facebook
Raymond Poulidor Velo Shop, SAVE 47% - fearthemecca.com
Vélo de course Mercier rose Poulidor occasion - VENDRE-SON-VELO.COM