Help to identify origin/history of a statuette of the Buddha? Can anyone help me identify this please? I can not find one the same, and would love a bit of history on him.

Small buddha bought on eBay -- stated "possibly from China", he was not sure

 

I'm looking to try and age or authenticate my Buddha. This is on bottom -- again I can not find one the same, only full circle ones.

 

Any ideas? Any help appreciated greatly in my search of his history.
Looking at the way the robe is set, It does not look like a Mahayana Buddha's statue. It seems it is Theravada Buddha. It is possible from Sri Lanka or Myanmar. I may be wrong. By the way, it is a good choice.