I'm afraid I can't answer your question , and frankly over the years I can't remember seeing anything but 5ers from NuWa. But I love a good mystery so I'll poke around too, just to see what was available , and/or happened to the company. First I'm going to have to figure out if NuWa was/is, a division of an existing company.
EDIT: Well so far no mention of TT's on the company web site
or the owners web page
The company page only mentions 5er production starting in1969, but nothing about operations prior to that, could be they dropped TTs in favor of 5ers as demand increased. I'll ask on the company page's FAQ and see if they come back with any info.
Company contact info; on the home page; gives 1-800-835-0676 you could phone and inquire, or contact them by e mail from the home page.