Identifying a Maker's Mark

Hi,

I tried everything else, so I thought I would ask the community
here. I bought the most beautiful silver colored handmade bowl. It is
not marked Sterling, but it sure looks like it is. It has a maker’s
mark which is a hammer with the letters D above it and F below. Has
anyone come across this mark before? I have pictures on the server,
hope it is ok to add the link (if not, sorry, my apologies)

silversmith mark F D hammer
http://verabattemarco.com/images/get-glam/hammered-bowl-4.JPG

Thanks, Orchidians!

Vera
Vera Battemarco
Couture Artisan Jewelry ™
http://verabattemarco.com