Can anyone help with this BMF N Silvica Metal Dish please

Hi.  I hope someone can help.  I found this metal dish in the North West of England and am now trying to find some information such as age and designer.  It has two great clear labels on the underside - one reads MADE IN WESTERN GERMANY, which does date the item to between 1949 and 1990.  Also I have found that BMF N (on the second label) stands for the Bavarian Hardware Factory in Nuremberg which was founded in 1902 by Hans Wagner and Willy Gundel.  Any help/info would be really appreciated.

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