Olympus OM2 with motordrive attached to Novoflex 100 to 400mm lens on Pistok grip

This setup belonged to the husband in our complex at Whistler who passed away last year. She told me that he had some camera gear that she had never seen in a locked suitcase. When she found the combination she asked me to look at it for donation (I was thinking a good Non Profit store in Squamish).
It took me two ours to figure out how to assemble it but I figure it's value would be as an auction item for the new Whistler Museum. Has anybody had experience with this & what do you think the value would be?