So sorry for your loss, mate. I know first hand how awful it is to watch a good friend slip away.
Myself and Charlie have an agreement - we've both told our significant others to contact the other in the event of, 'a misfortune', and they can then advise the valuations and certain obtaining of items.
Nothing would make me turn quicker in my grave than some of the valuations certain, 'friends', I've made would offer....