Revell & Co Dining Room set

We moved into a house and there is a dining room set here that I was able to locate some info on it, from labels on the table.  It is maple and there is a dining room table 60x48x30 plus 5 additional leafs that are 12 x 48.  There is a china cabinet and a serving/buffet table as well as 5 dinsing room chairs and 1 captain's chair.  There are leather covers for the entire table.  Just trying to find out what this might be worth.  I was told it was from around 1920.  The captain's chair has a loose arm and needs upholstery help.  There is a small crack in the upper left hand side china cabinet - approx 3 inches.

Thanks