TORONTO -- A Toronto auctioneer says a pencil sketch by Lawren Harris sold for $161,000 this week, a record price for a pencil sketch by the Group of Seven Artist.

the preparatory work for Harris's famous Lake Superior sold for nearly five times its estimated sale value of between $20,000 and $30,000.

The sketch was dated 1925 by Harris's wife.

The previous sale record for a Harris sketch was $64,900.

The sale price includes a 15 per cent buyer's premium.