I have sold several in recent years and now with I hadn't.
We may value them personally for reasons beyond intrinsic worth. But, fact is, once we die they just become some of the 'stuff' your family must deal with. If they don't want the gun then they will be sold, probably for way less than market value. However, in many cases the family does want them. The rest of my small collection, about a dozen, will remain and be designated who gets what in my will.