Very pretty vintage 10k Gold Cross and Chain by ESEMCO with bright cut designs. Both the chain and the cross are marked 10K and both have the ESEMCO mark. The cross is approximately 1 1/16" tall not including the jump ring and 5/8" wide. The chain is approximately 18 1/2" long and it has the diamond shaped ESEMCO tag with 10k on the back. It weighs 2.8 grams.
This ESEMCO mark was used in 1906, however, it was reproduced by the company in later years starting in 1934. The cross shows wear on the back side and the mark has worn down which makes me believe this might be an older piece. Exactly how old is hard to say but I'm fairly certain it is at least from the 1930s.
Condition: The front of the cross and the chain are in excellent vintage condition. The back of the cross shows wear which is common for a piece that was worn often and would rub against the clothing. As mentioned above, the marks have worn down but are still visible.