Every so often, I run my dads kodachromes from the late 40's thru the mid 60's through my projector for one of the kids to watch. I see no obvious signs of damage on any of them. The kids, now all adults(save for the youngest) want to see what life was like back then. We also have home movies shot on kodachrome stored on vhs tapes, which are not withstanding the test of time.