Glass Door Knobs Turned Violet (Manganese Reaction)
SKU:
$110.00
$110.00
per item
Standard size (2-1/4") glass door knobs that have turned violet with exposure to the sun over many years. Old time glass makers would include manganese in the glass to make de-colorize impurities to make the glass more clear. The radiation from the sun's rays over a long time turn the glass violet. There are some light scratches on both knobs.