The Universal Geneve 881101/01 came with a tachymetre bezel across its full production, graduated from 60 to 500 units. I have not seen any UG Clapton with a different unit scale.
I have seen one example of a Nina with a pulsations bezel. This piece indicates 881101/01 on the caseback. As it is the only Nina seen with a pulsations bezel, it is difficult to say that it is original to the watch. So while still unclear to me if original on the 881101/01, pulsations bezels are commonly found on the Universal Geneve 885105.
