Does anyone know if the 40th anniversary Monaco is thinner than the regularly available CAW211P? If it is thinner, how much thinner is it? Thanks!

 

There's no appreciable difference in width. See pics on https://forums.calibre11.com/threads/modern-mcqueen-monacos-caw211a-vs-caw211p.44124/

I suppose the display back on the P might be fractionally thicker than the solid back on the A but we'd be talking sheet of paper difference.