I posted a thread four years ago about the Return of the Prodigal Gun, a 10 ga. Ithaca NID 3.5" Magnum, that I got back decades later after regretting selling it decades earlier.
http://www.doublegunshop.com/forums/ubbthreads.php?ubb=showflat&Number=359151&page=1
In the same thread, redgrouse recounted the story of selling his Damascus barreled round action Dickson, regretting the loss of it, and later re-buying it 30 years later. If you have the Photobucket Fix, you can see his and mine at the above thread.
Gil