Mainspring Winder

Pocket watch information?

I have a pocket watch that has Jewelmont on the facing and a picture of a train. On the facing it also says Incabloc, 17 jewels, and unbreakable mainspring. Can anyone tell me any information about it or how much it is worth? It's in good condition except the winder is missing. Thank you.

It's old, it's broken and worth maybe $40..

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