Looks like he is from Australia. I searched around the web for Dunlop Walkers and found a site in Australia. My son lives there, gonna have to have him pick me up a pair. With the 60 some percent exchange rate, they should be pretty cheap!
Check this web site out:
http://melbourne.citysearch.com.au/E/V/MELBO/0074/56/40/4.html
It's the only one I could find so sounds like they are rare!
199.74.250.107 23:01:03