This is a Genuine OEM Porsche amber turn signal lens (left or right) for a vintage Porsche 911, 912, 930 years 1974 - 1989.
It came off my 1983 Porsche 911 SC to replace with a brand new one, though this lens looks new also. I changed the lens as the other lens had a tiny crack and I was told to change bothl so they would be identical in color.
If you need a replacement lens, this is like buying a new one at a very reduced cost.