ornamental gold rococo wall art set, vintage Syroco candle sconces & clock not working

1960s vintage Syroco gold plastic framed clock and wall sconces... this is a gorgeous set, very decorative. But we couldn't get the clock to work!

It might be possible to repair this with a new battery or clock movement. The body of the clock looks good, as do the wall plaques.

The clock measures 32 1/2" long end to end, and the sconces measure 18" long. This set is fairly adjustable width-wise, by the depth of loop in the metal chains.