Why is there such a broad time period here? (1200-1500)
Actually, dating that piece to a 300-year time period isn't a broad time period for that culture since these objects were used over a very long time period and were made in such a similar way throughout time, that they are hard for curators and scholars to put an exact date on them. The dates are generally attributed to the time period when the culture flourished.
The older the object, the more broad the time period possibilities might be. If you look in the ancient Egyptian and Assyrian collections, you'll see that some pieces have date ranges of 800-1,000 years!
Tell me more.
This would have been used by shamans who inhaled a hallucinogenic powder to communicate with deities. Before ingesting the powder via carved spoon, vomiting sticks were used to induce vomiting, cleansing the shaman before the ritual began.