Important Glass Negative Of Artwork for 1930 Melbourne Cup Phar Lap Postcard, black and white glass negative with title 'Melbourne Cup 1930', main image shows Phar Lap winning the race, with inset image of Phar Lap, inscription to lower border 'Phar Lap 1st, second Wind 2nd, Shadow King 3rd and to lower right corner 'Akers & Co. Photo', some wear to upper border, believed to be unpublished