This top was inspired by a most beautiful mohair top by Fanaberia. We discussed this and I did my own calculation. In case Fanaberia is going to write up her pattern, this would be a different pattern.
This is a top down seamless top in stockinette stitch. I used about 40 g of mohair. Any mohair 25 g/220-240 m should be fine.
Thanks to Isabel, an Italian translation is available.