Help identify Taxco ring marks

[Lu P]

It has the eagle mark 3 and the initials of a J with an R attached with a B beside.
Any information is greatly appreciated! Lu

[img][img]http://aycu26.webshots.com/image/30705/2006144896734450845_th.jpg[/img][/img]
[img][img]http://aycu40.webshots.com/image/29079/2006197401493426581_th.jpg[/img][/img]
[img][img]http://aycu25.webshots.com/image/29064/2006193269537887284_th.jpg[/img][/img]