Interesting item, and I can certainly see it encouraging the rest of the group to also be more generous int eh hopes of receiving coins themselves (even if the luck is purely imaginary and only seems lucky to the PC's/players)
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Oh and one small nit pick in the line: a woman who can't find his children and so on. (I just found the sentence a bit jarring due to the error)
Short and catchy, with all the quality I'd expect in a short story from one of the published magazines like the Magazine of Fantasy & Science Fiction.
The piece can work well as the basis behind a rescue mission for nearly any sci-fi setting, or a cautionary tale told around the star port bar by a retired brotherhood guard about what happens to those who are *too* successful with cutting edge creation.