Is that part of the Royal Oak, Michigan pair of Motos you bought for $450? (That's what the seller told me).

If so, I think the seller said his grandparents used them in a tour of France, not that one, The Tour du France, which probably means they are a non US model. Check the Francais catalogs. Neither Auchencrow, noted midwest professor of Motobecane history, nor I, a possessor of probably more French bikes than a normal guy should have, could ID it.