Beautiful boots. There are two shops on Rakuten that sell that boot, but one is sold out completely and the other appears to be sold out in your size. (i.e. they only have a size 3).
I can call Moto today and see if they have any in stock, if you'd like. My guess is that you would be somewhere between a 1 and 2. I can ask them how the sizing runs as well.
Awesome... really 'preciate the help Kashiwa, you're a damn good egg. What does the 25-26cm measurement designate? Length of the foot? If so I'm thinking that I'm most likely a sz 2 being that I'm a standard 9.5. Let me know what they say.