This is a vintage Rouan ladies' pendant watch.
The Swiss-made watch has a gold-tone case with an embossed back, a silver-tone face, gold roman numerals with a black background, and a loop for a chain.
Inside the watch, it reads "Moherta Trading Co ZZ Swiss Made Base metal 1 jewel".
The watch measures approximately 1.75" x 1.5".
It is in good pre-owned condition however it is not running and needs cleaned.