I have a brick of old Kodachrome...Kodachrome 40 Type A. Expired in 1981. I know I will not be able to test and use it all by next December and nobody on APUG classifieds seemed all that interested. So, do I have myself a gen-u-ine Mr. Haney type collectible here? That's fine with me--it looks nice on my shelf. What would you do--use as much as you can or just keep it as a relic from the "good old days?" I have a bunch of fresh Kodachrome that I am shooting (for whatever that is worth to the conversation!) Anyway, just curious what, if anything, you all have to say about it.