wash in warm water to remove size then with cold tea, dry on a sheet of glass
A well-used glass lantern will inevitably get some soot on it make sure you clean the glass with soapy water to lift off the oil that water alone cannot remove.
The glass of a kerosene lamp while glowing is hot. When water falls on it, there is a sudden change in temperature, which causes the glass to break.
well, if its crystal clear glass, then its a very valuable antique. if its heavy, its probably not that great.
There is not a definitive value for antique red glass. There are not only differing prices for when the glass was created, but what shade of red they are, such as ruby or cranberry.
A lamp enclosed in a glass case is commonly referred to as a lantern.
lantern
The glass needs to be sealed. Or it will not burn correctly.
One may buy antique absinthe glass from the site "Absinthe Originals". They do carry original antiques pieces and have a great variety to choose from.
Lighthouse chamber is a lantern
If these antique glass doors were not designed for fireplace use then soot and smoke could damage the glass. I would remove them or place another fireplace glass barrier between the fire and the antique doors. If they were designed for use in a fireplace then they should stand up to the soot and smoke from your fire and I would make sure to clean them frequently to avoid build up.
Lighthouse