I checked again and the only Heritage Furniture is Drexel Heritage !! But Drexel bought several other companies so this may have been one of them !! Not sure when they started using the Heritage name with theirs !! 2138 is probably the style number And the retailer where your family bought the sofa was Knorr Furniture, Midland Texas unless they bought it used !! Like I said before,, the sofa is made well !! Quality furniture usually sells well !! Check on ebay for some prices on their sofa`s !!
First I would verify that it is indeed made by Drexel Heritage !! They have a website and will look up the sofa from the product number if it is theirs !! You should find the number on the underside of the sofa !! They do not asses value though !! I looked up several for you about the same size and most run from $600. to $1200. if in good to excellent condition !! The fruit on the pillows may not be a selling point because not all would like it !! If they are reversible be sure to state that when you are selling it !! I did not find other Drexel sofa`s with this type of pattern on the pillows !! Wonder if it was a custom order or done at a later time !!