Lots of classics out there with which you just hate to part company. Your 870 will mean a lot to you and your son. I sold many a HG and rifle when my kids were small (for saftey's sake and to appease my wife which insured MY continued health and well being). I should have bought a bigger safe, for I dearly miss them and their increased value.
Hope your leg gets back to 100%. And just think of all the fun you'll have at airport security. "Please empty you pockets of all metal and go thru again."