Oak Drop Leaf Table and Chairs

A relative is selling an oak drop leaf table and six matching leather upholstered chairs and we are attempting to determine a fair price. It has a ship carved in the headrest of each chair and the legs of the table and chairs have carved details as well. It was acquired about 30 years ago from a long lost acquaintance so we have no way to determine where it was purchased. There are no labels or any other identifying marks other than some numbers stamped on the bottom of the chairs and some numbers stenciled on the bottom of the table. By the way it came with a matching buffet but that is not for sale.

I'm new to furniture appraisal so any advice on pricing this would be greatly appreciated.

Some photos of varying quality:

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