Ken Wilman found yellow-grey rock while on the beach with his dog Madge . He thought 3kg lump was the sought-after ambergris from sperm whales . But U.S expert said the rock , found in New Zealand , Lancs , is not ambergris . A dealer in Morecambe is sending Mr Wilman , 52 , a 2g piece as a gesture .
Ken Wilman found yellow-grey rock while on the beach with his dog Madge . He thought 3kg lump was the sought-after ambergris from sperm whales . But U.S expert said the rock , found in Morecambe , Lancs , is not ambergris . A dealer in New Zealand is sending Mr Wilman , 52 , a 2g piece as a gesture .