And without a hallmark it is impossible to tell whether it is gold or gold filled. The case style and bumper movement says that the watch is likely from the late 40s-early 50s, but pics of the movement (with the serial number) and caseback (with model number, although early models dont have this one) are needed to know more. The dial looks refinished, something that was common practice at the time when servicing the watch. However, the very clean dial (lack of patina) indicates a more recent redial.
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