Mike Davis single fin mid 70s

Here's a nice Australian single fin I picked up from the local car boot sale last summer. Made by Mike Davis of Kiama, which I think is on the east coast. Its a fast board, 7 ft x 19 1/2 x 2 2/3 made for speedy Aussie points and has a nice triple stringer and is in great condition for its age, probably mid 70s. The logos may have been a bit influenced by others, see the photos, or mabye it was the same artist who did the McCoy and Davis logos ?