Carl Zeiss Vario-M-Sonnar 460mm prototype

famous prototype macro lens revealed for Hasselblad during Photokina 1970, fixed focusing distance of 460mm, possible variable magnification ranges from 2:1 to 1:16(!), with special bayonet-mount Distar for 1:2-1:8 range, built-in 320W macro ring flast. Iis equipped with a special bayonet, probably for test purposes, attached sync cable and battery cord, total height 22cm, diameter of the front 11cm. This unique lens never went into production, a special piece of history of Zeiss and Hasselblad