Very good site i just found, worth a browse

http://www.sonyvintage.com/

It seems the owner is Belgian, maybe he is active here??  

That is a possiblilty

The collection looks familiar though I'm not totally sure of the purpose of the site.

i think its to try and document all sony walkmans and specifications, its not complete, i noticed they hadnt even mentioned the Boodo Khan which is a valued part of any sony collection

Yes, it's strange. There are only a lot of photos of every model, but almost no word about them.

The only information is copied from a japanese site.

And many photos are from other sites and auctions, but the original signature has been deleted and replaced with their own...

I hope they don't do the same with mines!