That is the right thing to do..and it does happen...sometimes. I myself have gotten two sellers mishaps and I always mailed them forward to the correct recipient with no problems ( 1 seller even sent me a little gift for my trouble!) On the selling side, when I sell lots of any kind, I make a list of what's in the box, put the list in the box than compare what has been sold to the list and write their name on list. I know I use the word " list" a lot..but basically it's check, double check, than a make sure ✔, so this never happens again! I'm glad you had great customers esp dealing with silver pieces.