Is it worth buying a watch at a street market?

This watch is an Enicar Automatic Sherpa Superdive. The caseback shows an oyster and pearl in relief, the word “Seapearl” and various other rather worn lettering, including the word “Ultrasonic.” Is it worth buying and restoring a watch like this? Enicar is one of the many Swiss brands that were thriving until the onset of…