a phosphorescent bottle

The bottle is partially filled with a strange slightly luminous liquid. A tiny chunk of phosphorescent moss is suspended within the contents of the bottle.

It is a phosphorescent bottle.
It weighs half a pound.

You identify a phosphorescent bottle.
It is a potion.
It decreases constitution by one and increases perception by three for ten hours.
After that, it decreases constitution by one and increases perception by two for fifty hours.
After that, it increases perception by one for forty hours.
It weighs seven ounces, and it is worth about five celeb.
Its keywords are bottle, phosphorescent, seeing, and potion.