Charger help with marks 900 and initials DE

[Roger Kent]

Hello my name is Roger and I need your help with a plate or charger that bears the initials DE and a 900 mark. The 900 and the DE are both punched into the peice. My question is about who the maker might be. The only reference I could find to DE is David Ellsworth. this would date this back to the 18th century. Please look at the pictures I have linked and let me know your thought if you can. Warm Regards, Roger A.

http://home.austin.rr.com/ralfrey/silverDE1.jpg" onclick="window.open(this.href);return false;
http://home.austin.rr.com/ralfrey/silverDE2.jpg" onclick="window.open(this.href);return false;
http://home.austin.rr.com/ralfrey/silverDE3.jpg" onclick="window.open(this.href);return false;