Nice shots Nick and I reckon you owe Barry for that one. Nice light ones are fairly common on the peninsula in places but not too many have that distinct dorsal stripe.
Beautiful light coloured, red and rusty copperheads are often found around Somerville and throught to Mornington and Mt Mrtha.
Darker ones, which are also pretty are found in Rosebud and around Redhill, The most dazzling red ones I have found have been right here in Mornington.That dorsal stripe is a rarity and Id love to try to breed some bizarre morphs from the snakes i get called out but, apart from it being illegal, id prefer to see them in the wild.