Hi Amelia thank you so much for writing in. What a fascinating cameo.
The fact that this piece of jewelry is from the Ukraine is interesting itself. You see, Ukraine have very strict customs regulations and travelers leaving the country are not allowed to take out jewelry from the territory of Ukraine, only the jewelry they had declared entering the country.
Travelers to Ukraine today July 2010 must declare all cash and jewelry, regardless of value, upon entering Ukraine. Undeclared items are, in fact confiscated.
http://www.kiev.info/shopping/kiev_jewelry.htm
Judging from the hardware/surround, the cameo pendant is not an antique cameo.
The actual cameo looks exquisite though. It looks similar to the banded agate cameo of the 1840-50s. Can you tell if it is made of shell, stone or composite material ? There are some excellent composition cameos/faux on the market. There is a way you can test cameo to see if it is composite material or not.
The number could be a batch number, factory number, not sure.
