[TowerTalk] UST 72' Crankup Tower Question

[larryjspammenot@teleport.com]

I'm looking at the possibility of picking up a used US Tower 72' Crankup tower. The current owner (not a ham) inherited it with a home purchase, and wants to sell it as he has no use for it. He doesn't know if it's the "Standard" model TX-472 or the "Heavy-duty" model HDX-572. Is there any way to tell? Do they possibly have different widths at the base section, etc? I'd like to know what to look for when I go look at it to determine the model number before I consider buying it, as I live on a mountaintop where I get substantial wind gusts.
LJ