Mid Century Silver Plate serving tray w/ dip bowl

Vintage mid century Sheridan silver plated serving tray/bowl with dip bowl with blue purplish tarnished color. Tarnish makes it look like an oil slick or blue carnival glass. Tray has a 10 5/8" diameter and is 1 1/4" tall. Dip bowl is 2 1/4" tall with a 4" diameter. Can be polished or left as is. Some light use scratching ( see last pic ).