Thank you everyone for your responses, I think we are all in agreement that we are indeed very lucky.
I love to watch the threads on this board and have learned a few tips from the photo daters. I do like to have a guess at the dates of photos and then wait for the opinion of the experts. Occasionally I get it right, then other times an expert comes along and proves I have a lot to learn

As for the photo restorers, I am totally amazed at what they can do, I really don't have the talent, patience or eye balls to try and do what they do.