Here it is, in all its 6.35 kg glory. For the record, the average horse heart weights about 4 kilos. In case you were wondering.
Another fun fact: there's currently a debate raging in the Australian racing community about whether to transport the heart and skeleton of Phar Lap from their respective locations to reunite them with the hide in Melbourne in time for the 150th running of the Melbourne Cup. However, the heart is apparently too fragile to travel. So, sadly, it looks like PL's heart will miss out on the whole anniversary hullabaloo. Which means that eager Melburnians will only get to gaze upon two bizarrely separated parts of the horse, rather than three. And they'll just have to make do with looking at a photo of a heart floating in formaldehyde. I heart Australia.