Vintage Indoor, Outdoor / Brass Wood / Coal Burning Room Steam Humidifier

This is an old brass plated coal, wood burning steam room humidifier.  The humidifier is in overall very good condition. It has seen plenty of use. The exterior finish is still in very good condition. The steam chamber where the water boils is coated in minerals which is normal for a steam humidifier. The coal chamber grate has rust but is not weak, rotted or heavily rusted, only surface rust. The ash chamber is in great shape. The only damage the humidifier has is at the opening of the ash chamber where ashes are removed.  The sides of the opening are dented. The humidifier was made in hong kong , I am not sure of its age. Other than the dents at the ash chamber entrance the rest of the humidifier has no cracks, dents or major blemishes of any kind.  In my thirty years of collecting and hunting antiques, this is the only one that I have ever seen.