Vintage ULTRA-Rare Faber Castell 67/54R Addiator Slide Rule Hybrid Calculator

  

An unusual model, a description of which I have not found anywhere. Faber Castell 67/54R Addiator Darmstadt D. There are natural signs of use. NO chips, NO cracks, NO dents, NO impacts! All elements work smoothly and clearly!

All numbers and indicators are absolutely clear and readable! Please watch the video and photos to form your opinion and evaluation!