Need Info on sideboard and dining table and chairs

Items include: sideboard, 6 chairs (one with arms) and a dining table with two "tripod" legs. These items belonged to my step grandmother and have been in storage in my garage for about a year. There are minor dings and scratches on the sideboard and chairs. The table comes with 3 leaves. Also a felted back table pad (for the leaves, too) is in excellent condition. There is a numbering system on all items, I included a picture of the numbers on the back of the sideboard. I want to sell these items, and I want to be sure I get what it's worth.