Answer:- can last forever when stored and sealed properly
- at the time it's the best method, producing the best image quality.
- the look of the "magic mirror" of the silvery image are very appealing
disadvantages:
- very complicated production involving labor intensive process
- very fragile if mishandled. even the slightlest mishandling can bring a lot of damage
- cannot be copied
- very expensive to buy (may also be an advantage to some)
Explanation:
