Lovely heavy pewter oval trays or platters made by the Rockford Silver Company, early 1900s.
These were probably intended for use in a restaurant or hotel - they're beautifully but simply made, and have a nice old patina from use.
This lot is four pieces in all - two large trays 15 1/4" x 12" overall, and two small trays 10" x 7 3/4" overall.