I'm with NRMA and have a special clause stating my games values as a total. They also asked to take digital photos and cut them to a disc. As Wotto mentioned the extra cost wasn't all that much.

When placing insurance on them aim high - I doubled the top end value of each game just to cover my arse

Absolutely.  You've got to allow for the restoration of these games and the cost involved too.

I've got an agreed value on my items (pins) too.