Known Alan since his first National setup in the 1984 NSCC in Parsippany, NJ. I never had any business dealings with Alan but once when he ran phone auctions I was on the phone to make a bid on a baseball card when a voice said "the auction is over" - an abrupt hang-up. His auctions ended at exactly midnight.
RIP
I added some other characters with a picture of Alan from 1999 - I do not recall where this show was held.