In my novice opinion it looks, feels, & sounds more like plastic
Our watch was part of a large inheritance. No other knowledge of it exists amongst the relatives. My husband and I have been attempting to identify by online research. I have been the most successful by finding a close match in your forums. The evidence introduced in the thread leads us to believe that our watch is possibly the '48 Broker. We read a brief "how to" on measuring the crystal and/or the bezel. However after attempting to do so, we feel our numbers will be inaccurate. Instead I am hoping that my pictures can serve as an alternative and the before mentioned forum thread as a substitute. Like I said, I did find a close match in the forums and perhaps this can be used for comparison. I'm including the URL for the thread, just in case it helps. In the very least, check the thread so the research can pick up where the panel members left off.
My inspection and opinion of it's condition:
Crystal (appears and feels more like plastic) is significantly scratched, engraved details on the crown have been worn down in some spots, missing the minute hand hand, missing lever for adjusting speed, damage to the movement is preventing it from operating as designed, gold is in fairly good condition but needs a good shinning up, and the entire case needs a thorough cleaning.
Thank you for your time and knowledge shared with me.