I posted the same question on an auction on eBay right now in regards to the power supply.
Lister mentioned that it came off a 'working' system he a had a while ago, but "due to age is selling as is" (Blah blah). He in fact did acknowledge my question via email response and updated his listing to reflect no power supply is included. He didn't post the question though.
I have a 1764 in the box with all manuals, PSU and original disks I'm debating what to do with.. I'm going to get the expander 3 from Jim and see how the REU and the Swiftlink together with the BBS. If it's not anything major I'm going to sell the REU and Expander 3 together..
Mr.Micro
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I've seen the future.... and I want to go back!
BBS: micromansion.kicks-ass.org:23