I have received the below information directly from Delma.

Delma quartz watch this model was produced as from 1982 for a couple of years (2-3) which means that the watch was produced almost 40 years ago.

The material of case and bracelet is brass, gold plated with a layer of 5 microns gold. The case is set with a mineral glass and the movement was produced by ETA or Ronda, both Swiss made.

The watch, bracelet has no signs of wear and may of have been never worn. A change of battery is required.

Happy to answer any questions.