The
lamp on the left (moulded
lamp) is correctly identified: Hellenistic,
Asia Minor/Levant, 2nd-1st century BC. The black clay is quite common in
lamps of this period and was produced by a reducing environment in the kiln.
Lamps of this
type are seldom faked and, although it can be difficult to be definitive based only on images, the surface and other details raise no concern and I suspect this example is probably authentic.
The
lamp on the right (saucer
lamp) is more problematic. My
field is Classical lychnology and I know little about
lamps outside that discipline - Indus Valley, etc. I see nothing in the images that suggests the
lamp is not ancient but I am unfamiliar with
lamps outside the Classical tradition and I cannot confirm its precise region or period.