Art Deco dining set- info?

I recently bought an Art Deco dining set made by the Grand Rapids Bookcase and Chair Company, which existed from 1897-1960 in Grand Rapids, Michigan. The man who sold it said it came with a house he bought in the fifties. I'm wondering if there's an Art Deco expert out there who can give me a general idea of its age and value.

The rectangular table has gate legs which fold out to support two drop leaves. The set has four side chairs and two arm chairs of simple construction, with spring upholstered seats. The buffet is about 7 feet long with four cabinets, two small drawers and a large silver drawer with a drop-down front. All is solid wood with a black stain finish. The buffet has beautiful brushed steel (?) drawer and cabinet pulls.

Condition is good. The stain is quite worn in a few spots. There are some surface scratches, but only two small areas where the wood is actually damaged (edge of one drop leaf and bottom edge of buffet). The chairs were reupholstered once in 1955. I plan to refinish everything and reupholster the seats eventually. Will this affect value?

Any general information on this type of furniture or specific information on the GR Bookcase and Chair Co. would be greatly appreciated. Thank you!

Charley K another poster to this group mentioned Grand Rapids furniture in another thread, not knowing anything about this furniture 'style' I had a look on the net and found the following at ..........