15th/16th c. Italian drawing: school of Leonardo?

The Swan, from England, sells on 30 June a "15th/16th century Italian drawing" Virgin and child, estimated at £300 to £500.

It is a relatively large (35 by 45 cm) but rather battered looking drawing in the style of Leonardo da Vinci, and looks to be done by a fairly accomplished artist. The inscriptions on the back certainly add to the impression that it is genuinely old. In that case, it should be worth more, at least £1,000 to £2,000 without even guessing who the artist might be.

The drawing depicts a Virgin and Child with a St. Joseph to the left (so really a Holy Family), and the head of an old man more faintly to the upper right. I would describe it as School of Leonardo, but wasn't able to find any paintings really similar to it (many matching elements, but e.g. the child seems to sculpted and muscled to be by Leonardo, and he usually didn't show the ear of the Virgin but hid it beneath hair), and am curious if it will attract a bidding war or not. All ideas on who the artist might be, or what school or date, are welcome!

UPDATE: an anonymous  reader commented (see below this post) and showed me the artist and painting..

This is a painting by Il Sodoma, contemporary of Leonardo but from Siena. The Virgin and Child are quasi identical.

The Joseph can be compared with the one in the above painting.

Are the drawings by Sodoma, a follower, or fakes? Perhaps they are just drawing made by an artist on his Grand Tour seeing the works of Sodoma. But it's good to be able to put a possible name to the origin of them.

UPDATE 2: WITHDRAWN! Last minute withdrawn from the auction. Whether that has anything to do with this blog is anybody's guess of course.

Henry Mirande (plus a 20th century "17th century Dutch" work)

Swan, Uk auctioneer, sells on 2 July 2015 an "Oil on canvas". Which isn't much of a description, obviously. No estimate either...

Luckily they provide decent images, which allow to find the artist: Henry (or Henri) Mirande (1877-1955), French modernist (expressionist) painter and illustrator, relatively famous around the time of his death but since largely forgotten, also because not many of his works seem to come on the market. The bulk of his work was in illustration for the many French magazines of the first half of the 20th century, including the more naughty ones, with many appearances in "Le Rire" and "Le Pêle-Mêle". His style in these illustrations is quite different from his usually rather sombre paintings. I'll not put further illustrations here, as the copyright status on his work isn't clear to me (the benefit of sticking to long dead artists!), but you can appreciate some of his wonderful illustrations here.

His paintings fetched $1,000 to $2,000 in the 1980s, and since then I could only find traces of one sold painting, which fetched some 2,000 Euro in 2007. I guess the one for sale here (of unknown size) should be worth at least the same.

At the same auction you can buy a "17th century Dutch oil on panel", estimated £200 to £300.

The image makes it clear that this isn't a 17th century work though, and the second image of the "indistinctly signed" signature shows it to be the work of Adrianos Marijnissen (1899-?), whose paintings of Winter in the Netherlands fetch usually around £1,000. A bit too much in my view, but if you like retro-sentimentalism then it may be a good buy. If you want a genuine 17th century painting though, better steer clear.