I suspect this is the same brown (mottled) skin topped species as reported at sightings 4646635, 4646642 &/ 4646685. This fungi appears regularly in the locality and seems to favour open (grassed or bare earth) sunny positions. The photos show a 3 day sequence, Day 1 in photos 1 & 4, Day 2 in photo 2, and day 3 in photos 3 & 5. Phots 4 & 5 show the underside on days 1 & 3 respectively.