pwillard,
The processor looks pretty nice. If I'm correct, the date code says it's made during the 47'th week in 1975, effectively older than me, by not by too much though. If you're willing to trade this chip, I can send you a completely assembled Phi-1 shield. You plug in into your adruino and load some codes it's ready to go. I think it's a fair trade. The assembled kit should be around $35 (parts + 1 hour labor) and your chip could be worth that much to the right buyer. But to keep your soldering iron happy I'm also willing to toss in a Bare PCB if you have any additional chips to trade. Just PM me. Thanks.