$2,000 · Very Rare Carl Zeiss Planar 1.4/50 ZF-IR lens Nikon Ais Infra-red lens coating

Very Rare Carl Zeiss Planar 1.4/50 ZF-IR lens Nikon Ais Infra-red lens coating.Lens features special coatings for transmitting infra-red light rather than the normal T-star.This is not the industrial version which has screw stops for focus and aperture. This lens allows much high transmission of infra-red frequencies than the t-star version Very rare lens. Google Ai estimates the value at $2100 US ($2900 Can). Last listing I could find was $2300 US in 2019. In person preferred. Cash only please.