Both are treadles, the #127 has Sphinx decals and I just got it, it needs TLC. The #66 i've refinished and is in working order, but decals are 'barely there'. I know it depends on what I'm going to do with them, but I'm leaning toward making the #127 shuttle a working model as it sooo reminds me of my grandma. I do appreciate the answers to my question.