this might be of help
Thanks for the link. The description given in the original post certainly seems to confirm what was suggested by the the technician at VulcanKilns.com regarding the label applying to just the upper ring.
Unfortunately that post is quite old, and Sugarcreek Industries is also, apparently, out of business. The website link is dead (brings up a 'place-holder' page) - and the 800 number is answered with 'Congratulations - just for calling, you win a Caribbean cruise....'