Need some button identification help!

[Pedersen]

It's a flat button with some weight. It looks like Greek writing on the back to me. Any ideas? Found in an area were I have found lots of early 1800's stuff in northern VA.

 

[nhbenz]

I believe that may read "GOLD PLATE", But I'm not certain by any means, as usually the term gilt was used with gold.
However, this article shows a clearer picture of the backmark: http://www.wetreasures.com/treasures/feature/201202.htm
Unfortunately it doesn't give any specific details about it, but early 1800's is about right.