cowjam,
Thanks. Although none of them are that old but if you're ok with me trading one PCB with all 4 of them, we can go ahead. Packing two CPUs facing towards each others pins is a nice way to protect them. 
I have a boat load of PIIIs any many K6IIIs but not that many Athlons. At the time I started collecting (05), Athlon thunderbirds could still be worth of some street values but not any more. For celerons, I have 633 and 1GHz and maybe something in between but it's nice to add anything decent in shape to my CPU collection at all. They're so hard to find. Well if you're into straightening pins from a pile of ill-treated recycled CPUs collected purely for gold extraction, you're a saint. I did that on one LSI processor and I still feel burnt-in images of those pins in front of me. ;D
I'll PM you my address in the USA and if the postage is not so bad we can do a trade.