Needed: Expert opinion on US 32, 33's

I've placed up for auction one of my better 'strip
of 4 on piece'. They are either 32's or 33's, but
since the tops are cut away, I can't make a
determination. Maybe someone out there knows some
other difference.

http://cgi.ebay.com/ws/eBayISAPI.dll...257042 7&rd=1

If that link doesn't work here is where it is on a
shorter link:

http://search.ebay.com/_W0QQsassZloepp

Thanks,
TL