As more and more of "The Greatest Generation" pass on, the difficult problem of selling vintage guns, by a family member with somewhat limited knowledge regarding the guns, is becoming a frequent and frustrating issue George. Thank you for not including your email so your question could not be misconstrued.
Unfortunately, the market today for even decent condition lower grade doubles (unless 20g) is poor, and unlikely to improve. If you'll let us know your general location, we may be able to recommend a dealer nearby, who will likely offer 1/2 of what he hopes to realize on the sale. Another option is to visit The Southern in North Carolina next Spring where you could certainly get educated estimates of both desirability and value of the guns from LCSCA members.