That is a ladies cocktail watch, most likely from the 40s or the 50s. Most didnt have model numbers on them like the Oyster cased watches do. The 1400 and 1401 are the movement numbers and not the model number of the watch. The only thing you can do most of the time is to search for something similar. Trying to find an exact match for a watch that is so old and uncommon will be a hard task as very few exist anymore. Most were melted down for gold scrap when the cocktail watch fad died down.
Here you go, this looks more like your first picture.
https://www.ebay.com/itm/Vintage-Lad...oAAOSwbYJfl3pp