I’d say, most definitely it was a radium-dialed watch.
Like JW said, be careful. It’s very difficult for a watchmaker to remove every bit of radium from those nooks and crannies. Even with mask and gloves on (dispose into ziplock afterwards), do NOT be near (6 feet? ) the watch right after opening, since radon gas (radioactive decay byproduct of radium) may have built up under the crystal even with residual amounts of radium present. Probably not much, but better safe than sorry...
Beautiful little watch, btw!
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