I have a slightly different Miko Mercier, jersey, I think from 1979 with VivaGel as one of the sponsers... from what I have rear, it would have been the same as the one Joop wore to his Vuelta win.
Here one I sold recently
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1 Super Record bike, 1 Nuovo Record bike, 1 Pista, 1 Road, 1 Cyclocross/Allrounder, 1 MTB, 1 Touring, 1 Fixed gear