stopped watching at two tone watches being hit worst,my vintage datejust two tone has increased value in 6 mths,two tone submariner preowned would be solid investment as well,if it has datejust or sub in the rolex name ur good,and slow down,fukin hell,this stuff is meant to b fun.any good watch bought used at good price is fine,zenith,baume mercier are just not as desirable to some as dogshit tag heuers or cool omegas,thats why u might get fuked in resale.