Hi,
I believe the casted marks read; 800 (fineness) followed by the mark, in vertical position, of the Crescent Moon and Crown and Geschützt (Geschutz, Geschuetz), German mark covering a proprietary copyright, used until 1883. (Geschützt = 'Protected' in English). The mark was also used in Austria.
I believe I cannot see a maker/retailer’s mark.
http://www.925-1000.com/Fgerman_marks_a1884.html
Oel.