Mine haven't stopped moulting this year, the hair is like tumbleweed floating round the kitchen. I'd put him at about 9, hard to describe but he has that look that mine seem to get as they go beyond middle age. I'm probably totally wrong though.
No idea on age but hes lovely!
If its any consolation on the hair front my blooming yak of a lurcher produced a pile of undercoat that size when I brushed her the other day! Shes deerhound/greyhound x beddy/whippet.... where the heck she gets the genetic disposition to blow undercoat bi annually like a husky I will never know!!