According to your description, it should be a dowry for women during the late Qing Dynasty and the Republic of China. Tianbao was the trademark left by the silver house at that time when it was making silverware. If it is very light, it means it is hollow. As for the value, it depends. Specific craftsmanship. Generally speaking, because it was a commercial product at that time, the stock was large and the value was not very high.