1995 - Movado
Movado took their classic Museum design watch and made a solar version. The face is a single array of very dark blue solar cells with a the “dot” at 12 It is looks just like any other Museum watch except for the almost imperceptibly spender lines on the face diving the solar cells.
Another existing non-solar watch design was also adapted into a solar design Mondaine produced a version of their Swiss Railroad watch as a solar watch. It looked like their other models but the face was a solar cell.