Some helpful info for ya'
reproduction silver, circa 1893 to 1904 made by B. Neresheimer and Sohne
this is a maker from the german based Hanau silver industry in Hanau, Germany.
HANAU SILVER
From the middle to the end of the nineteenth century copies of old silver, and items designed in an amalgamation of historic styles, satisfied customer demand and preference. Many firms in Europe and in the United States produced this type of silver. Generally speaking, the recognition of reproduction silver does not present a problem since it is marked according to the laws of the country of origin. Contrary to this, the antique silver industry of Hanau chose to mark its output with fantasy marks. It is difficult to say if this was practiced with a clear intent to deceive. But it is strange that the spurious marks somewhat resemble old marks, and are also harmonized with the style of the piece. For example, French rococo style reproductions are marked with French looking marks, German seventeenth century-inspired pieces got German-looking marks, and so on. Furthermore, most Hanau firms chose as company marks styles reminiscent of seventeenth and eighteenth century maker's marks.
That should get ya started, and I wouldn't "clean" it anymore personally, some of these peices sell for thousands, I would have a pro look at it before I caused any damage cleaning it myself
BTW- Nice find!