Need ID on hammered aluminum dish by Royalty

I can't find any info on this dish.  It is a round etched bowl with
hammered aluminum and curled handle across middle, marked =91Royalty,
Crown Mark, Aluminum Ware=92 with beautiful pattern of flowers and
leaves, scalloped edge.  It looks like poppy flowers in the design.

Here's a photo: (hope it works!)

http://home.earthlink.net/~laurabiz/images/royalty%20dish.JPG

thanks!
L