Help to identify this stamp

[Andedoong]

(Post edited by admin to reveal images)

[Traintime]

Until we have something more definitive, oddities in the star points and shape make me think about the central mark of the as yet unidentified "Bell, Star, and Leaf" mark found on silverplate: http://www.925-1000.com/silverplate__Unk.html

Of course, that's not a definitive answer, but a reference to consider.