Antique J & S (John Chatillion & Sons) Grocery Scale

Around late 1800`s to early 1900`s John Chatillion & Sons Grocery/Deli/Meat Scale. Double Faced. Both Sides Are White. Both Sides Have Glass And Are Not Cracked. Both Sides Have Turned Brown Or Faded A Little. Both Faces Have A 9 3/4 Inch Diameter Including The Brass Trim. Weigh Around 30 Pounds. Original Tray Was Lost. Little Rusty Cast Iron Body. Measures 23 Inches Long. 11 1/2 Inches Wide With The Skeleton On. With The Skeleton Removed It`s Only 10 3/4 Inches Wide. The Cast Iron Base By ItselfI Is 8 Inches Wide. Stands About 11 1/2 Inches High. I Got This From My Grandpa In His Garage And Would Just Like To Know More About It, And Also Was Wondering How Much It Is Worth.