a person, after doing his Waajib Qurbani donated the skin, or rather, gifts the skin of the Qurbani animal to the owner of the farm where Qurbani was carried out. once the owner takes possession of the skin which was gifted to him, he sells it to a particular person. the funds accrued from the sale of the skin is then donated as Lillah to a particular institute. 

Is the sale of the skin valid as the normal Mas'ala is that selling of Qurbani meat is not permitted? 

Is the Lillah donation to the institute in order?