With "unbreakable mainspring" it's probably a cheap pin pallet escapement similar to one in this WUS post HERE. If so, I woudn't worry about the dial or the name of the watch - just give it to your kids to play with. Despite my previous statement it's a fact - pin lever watches can keep pretty accurate time.I’ve received the is vintage piece as a gift from my mom but can’t figure out what company made it.
Anyone know what it might be? Thanks!