Mine looked shabby, inner lenses were dirty, the white bead of sealer that bonds the lens to the reflector had turned yellow, and the adjusters were rusting, and suffered broken clips.
Lamps were stripped, and submerged in bucket of very hot water and probably a couple of cups full of bleach, as said above, left for half a day or so, then emptied , and flushed with clean hot water, and forced dry with a hot air gun, the lens should now be sparkling, and the yellow sealer returned to white, any stone chipping on the lenses, can be treated with a clear wax, then finished with new adjusters, and good quality bulbs...
Here's mine, inner's are 20 years old, outers are 6 months!
Thom
