Besides, you found this vase in a foreign flea market, which makes it even more difficult to determine the company. I suggest you know the manufacturing technology and style of this vase first, which may provide some clues about this company. In addition, you can search some historical materials and documents to learn some information related to "Oriental Company".
In a word, more information and investigation are needed to determine the specific background and period of this "Oriental Company". I hope these suggestions can help you.