Altec 604 Ad

I wonder if they had any clue that the 604 would be in production for so long or live on after the demise of the company. I'd really like to try one of these speakers. Perhaps the mail man will deliver one some day. Is there a preference over the different models? How does the GPA stack up to the originals? If anyone has a 604 taking up too much space just pop it in the mail to me lol.