Does anyone in the world know anything as to the potential value of the following : DM31 all blue made around mid eighties. Supposed to be rare according to BBC radio and some people who are not experts like you guys.
Any help deeply appreciated as I have one.

wm31 blue is not rare at all

tell the bbc they are mad

The only thing about this business that creates doubt in my mind is that the number DM31 and blue body is listed nowhere. That is how I came upon your site - but you don't list it either and Sony Japan don't know.
Anyone else got some advice?

Thanks for dropping in but I'm afraid the WM-31 is a very ordinary mass-produced unit and sadly not worth the effort of selling, even in blue. Sorry.